词条 | Raspberry Pi | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
释义 |
|logo = |name = Raspberry Pi |image = File:Raspberry Pi 3 B+ (39906369025).png |caption = Raspberry Pi 3 Model B+ |releasedate= {{Start date and age|df=y|2012|02|29}} |price = US$35[1] |soc = Broadcom BCM2837B0 |cpu = 1.4 GHz 64/32-bit quad-core ARM Cortex-A53 |graphics = Broadcom VideoCore IV 300 MHz/400 MHz |storage = MicroSDHC slot |memory = 1 GB LPDDR2 RAM at 900 MHz[1] |os = Linux FreeBSD NetBSD OpenBSD Plan 9 RISC OS Windows 10 IoT Core Windows 10 ARM64[2] |power = 1.5 W (average when idle) to 6.7 W (maximum under stress)[4] |website = {{URL|1=https://raspberrypi.org}} |aka=RPi}} The Raspberry Pi is a series of small single-board computers developed in the United Kingdom by the Raspberry Pi Foundation to promote teaching of basic computer science in schools and in developing countries.[3][4][5] The original model became far more popular than anticipated,[8] selling outside its target market for uses such as robotics. It does not include peripherals (such as keyboards and mice) and cases. However, some accessories have been included in several official and unofficial bundles.[8] The organisation behind the Raspberry Pi consists of two arms. The first two models were developed by the Raspberry Pi Foundation. After the Pi Model B was released, the Foundation set up Raspberry Pi Trading, with Eben Upton as CEO, to develop the third model, the B+. Raspberry Pi Trading is responsible for developing the technology while the Foundation is an educational charity to promote the teaching of basic computer science in schools and in developing countries. According to the Raspberry Pi Foundation, more than 5 million Raspberry Pis were sold by February 2015, making it the best-selling British computer.[6] By November 2016 they had sold 11 million units,[11][7] and 12.5m by March 2017, making it the third best-selling "general purpose computer".[8] In July 2017, sales reached nearly 15 million.[9] In March 2018, sales reached 19 million.[10] Most Pis are made in a Sony factory in Pencoed, Wales;[11] some are made in China or Japan.[12] Generations of released modelsSeveral generations of Raspberry Pis have been released. All models feature a Broadcom system on a chip (SoC) with an integrated ARM-compatible central processing unit (CPU) and on-chip graphics processing unit (GPU). Processor speed ranges from 700 MHz to 1.4 GHz for the Pi 3 Model B+; on-board memory ranges from 256 MB to 1 GB RAM. Secure Digital (SD) cards in MicroSDHC form factor (SDHC on early models) are used to store the operating system and program memory. The boards have one to four USB ports. For video output, HDMI and composite video are supported, with a standard 3.5 mm tip-ring-sleeve jack for audio output. Lower-level output is provided by a number of GPIO pins, which support common protocols like I²C. The B-models have an 8P8C Ethernet port and the Pi 3 and Pi Zero W have on-board Wi-Fi 802.11n and Bluetooth. Prices range from US$5 to $35. The first generation (Raspberry Pi 1 Model B) was released in February 2012, followed by the simpler and cheaper Model A. In 2014, the Foundation released a board with an improved design, Raspberry Pi 1 Model B+. These boards are approximately credit-card sized and represent the standard mainline form-factor. Improved A+ and B+ models were released a year later. A "Compute Module" was released in April 2014 for embedded applications. The Raspberry Pi 2, which added more random-access memory, was released in February 2015. A Raspberry Pi Zero with smaller size and reduced input/output (I/O) and general-purpose input/output (GPIO) capabilities was released in November 2015 for US$5. By 2017, it became the newest mainline Raspberry Pi. On 28 February 2017, the Raspberry Pi Zero W was launched, a version of the Zero with Wi-Fi and Bluetooth capabilities, for US$10.[13][14] On 12 January 2018, the Raspberry Pi Zero WH was launched, a version of the Zero W with pre-soldered GPIO headers.[15] Raspberry Pi 3 Model B was released in February 2016 with a 1.2 GHz 64-bit quad core processor, on-board WiFi, Bluetooth and USB boot capabilities.[16] On Pi Day 2018 the Raspberry Pi 3 Model B+ was launched with a faster 1.4 GHz processor and a three-times faster gigabit Ethernet (throughput limited to ca. 300 Mbit/s by the internal USB 2.0 connection) or 2.4 / 5 GHz dual-band Wi-Fi (100 Mbit/s).[10] Other features are Power over Ethernet (PoE), USB boot and network boot (an SD card is no longer required).
HardwareThe Raspberry Pi hardware has evolved through several versions that feature variations in memory capacity and peripheral-device support. This block diagram describes Model B and B+; Model A, A+, and the Pi Zero are similar, but lack the Ethernet and USB hub components. The Ethernet adapter is internally connected to an additional USB port. In Model A, A+, and the Pi Zero, the USB port is connected directly to the system on a chip (SoC). On the Pi 1 Model B+ and later models the USB/Ethernet chip contains a five-port USB hub, of which four ports are available, while the Pi 1 Model B only provides two. On the Pi Zero, the USB port is also connected directly to the SoC, but it uses a micro USB (OTG) port. {{clear|left}}ProcessorThe Broadcom BCM2835 SoC used in the first generation Raspberry Pi[23] includes a 700 MHz ARM11 76JZF-S processor, VideoCore IV graphics processing unit (GPU),[17] and RAM. It has a level 1 (L1) cache of 16 KB and a level 2 (L2) cache of 128 KB. The level 2 cache is used primarily by the GPU. The SoC is stacked underneath the RAM chip, so only its edge is visible. The 1176JZ(F)-S is the same CPU used in the original iPhone,[18] although at a higher clock rate, and mated with a much faster GPU. The earlier V1.1 model of the Raspberry Pi 2 used a Broadcom BCM2836 SoC with a 900 MHz 32-bit, quad-core ARM Cortex-A7 processor, with 256 KB shared L2 cache.[19] The Raspberry Pi 2 V1.2 was upgraded to a Broadcom BCM2837 SoC with a 1.2 GHz 64-bit quad-core ARM Cortex-A53 processor,[20] the same SoC which is used on the Raspberry Pi 3, but underclocked (by default) to the same 900 MHz CPU clock speed as the V1.1. The BCM2836 SoC is no longer in production as of late 2016. The Raspberry Pi 3+ uses a Broadcom BCM2837B0 SoC with a 1.4 GHz 64-bit quad-core ARM Cortex-A53 processor, with 512 KB shared L2 cache.[10] PerformanceWhile operating at 700 MHz by default, the first generation Raspberry Pi provided a real-world performance roughly equivalent to 0.041 GFLOPS.[21][22] On the CPU level the performance is similar to a 300 MHz Pentium II of 1997–99. The GPU provides 1 Gpixel/s or 1.5 Gtexel/s of graphics processing or 24 GFLOPS of general purpose computing performance. The graphical capabilities of the Raspberry Pi are roughly equivalent to the performance of the Xbox of 2001. Raspberry Pi 2 V1.1 included a quad-core Cortex-A7 CPU running at 900 MHz and 1 GB RAM. It was described as 4–6 times more powerful than its predecessor. The GPU was identical to the original.[19] In parallelised benchmarks, the Raspberry Pi 2 V1.1 could be up to 14 times faster than a Raspberry Pi 1 Model B+.[23] The Raspberry Pi 3, with a quad-core ARM Cortex-A53 processor, is described as having ten times the performance of a Raspberry Pi 1.[24] This was suggested{{by whom|date=January 2019}} to be highly dependent upon task threading and instruction set use.{{cn|date=January 2019}} Benchmarks showed the Raspberry Pi 3 to be approximately 80% faster than the Raspberry Pi 2 in parallelised tasks.[25] OverclockingMost Raspberry Pi systems-on-chip could be overclocked to 800 MHz, and some to 1000 MHz. There are reports the Raspberry Pi 2 can be similarly overclocked, in extreme cases, even to 1500 MHz (discarding all safety features and over-voltage limitations). In the Raspbian Linux distro the overclocking options on boot can be done by a software command running "sudo raspi-config" without voiding the warranty.[35] In those cases the Pi automatically shuts the overclocking down if the chip temperature reaches {{convert|85|C|F}}, but it is possible to override automatic over-voltage and overclocking settings (voiding the warranty); an appropriately sized heat sink is needed to protect the chip from serious overheating. Newer versions of the firmware contain the option to choose between five overclock ("turbo") presets that when used, attempt to maximise the performance of the SoC without impairing the lifetime of the board. This is done by monitoring the core temperature of the chip and the CPU load, and dynamically adjusting clock speeds and the core voltage. When the demand is low on the CPU or it is running too hot the performance is throttled, but if the CPU has much to do and the chip's temperature is acceptable, performance is temporarily increased with clock speeds of up to 1 GHz, depending on the board version and on which of the turbo settings is used. The seven overclock presets are:
In the highest (turbo) preset the SDRAM clock was originally 500 MHz, but this was later changed to 600 MHz because 500 MHz sometimes causes SD card corruption. Simultaneously in high mode the core clock speed was lowered from 450 to 250 MHz, and in medium mode from 333 to 250 MHz. The Raspberry Pi Zero runs at 1 GHz. The CPU on the first and second generation Raspberry Pi board did not require cooling, such as a heat sink or fan, even when overclocked, but the Raspberry Pi 3 may generate more heat when overclocked.[28] RAMOn the older beta Model B boards, 128 MB was allocated by default to the GPU, leaving 128 MB for the CPU.[29] On the first 256 MB release Model B (and Model A), three different splits were possible. The default split was 192 MB (RAM for CPU), which should be sufficient for standalone 1080p video decoding, or for simple 3D, but probably not for both together. 224 MB was for Linux only, with only a 1080p framebuffer, and was likely to fail for any video or 3D. 128 MB was for heavy 3D, possibly also with video decoding (e.g. XBMC).[30] Comparatively the Nokia 701 uses 128 MB for the Broadcom VideoCore IV.[31] For the later Model B with 512 MB RAM, new standard memory split files (arm256_start.elf, arm384_start.elf, arm496_start.elf) were initially released for 256 MB, 384 MB and 496 MB CPU RAM (and 256 MB, 128 MB and 16 MB video RAM) respectively. But a week or so later the RPF released a new version of start.elf that could read a new entry in config.txt (gpu_mem=xx) and could dynamically assign an amount of RAM (from 16 to 256 MB in 8 MB steps) to the GPU, so the older method of memory splits became obsolete, and a single start.elf worked the same for 256 MB and 512 MB Raspberry Pis.[32] The Raspberry Pi 2 and the Raspberry Pi 3 have 1 GB of RAM.[33][34] The Raspberry Pi Zero and Zero W have 512 MB of RAM. NetworkingThe Model A, A+ and Pi Zero have no Ethernet circuitry and are commonly connected to a network using an external user-supplied USB Ethernet or Wi-Fi adapter. On the {{nowrap|Model B and B+}} the Ethernet port is provided by a built-in USB Ethernet adapter using the SMSC LAN9514 chip.[45] The Raspberry Pi 3 and Pi Zero W (wireless) are equipped with 2.4 GHz WiFi 802.11n {{nowrap|(150 Mbit/s)}} and Bluetooth 4.1 {{nowrap|(24 Mbit/s)}} based on the Broadcom BCM43438 FullMAC chip with no official support for monitor mode but implemented through unofficial firmware patching[35] and the Pi 3 also has a 10/100 Mbit/s Ethernet port. The Raspberry Pi 3B+ features dual-band IEEE 802.11b/g/n/ac WiFi, Bluetooth 4.2, and Gigabit Ethernet (limited to approximately 300 Mbit/s by the USB 2.0 bus between it and the SoC). Special-purpose featuresThe Pi Zero can be used as a USB device or "USB gadget", plugged into another computer via a USB port on another machine. It can be configured in multiple ways, for example to show up as a serial device or an ethernet device.[36] Although originally requiring software patches, this was added into the mainline Raspbian distribution in May 2016.[36] The Pi 3 can boot from USB, such as from a flash drive.[37] Because of firmware limitations in other models, the Pi 3 is the only board that can do this. PeripheralsThe Raspberry Pi may be operated with any generic USB computer keyboard and mouse.[50] It may also be used with USB storage, USB to MIDI converters, and virtually any other device/component with USB capabilities. Other peripherals can be attached through the various pins and connectors on the surface of the Raspberry Pi.[38] VideoThe video controller can generate standard modern TV resolutions, such as HD and Full HD, and higher or lower monitor resolutions as well as older NTSC or PAL standard CRT TV resolutions. As shipped (i.e., without custom overclocking) it can support the following resolutions: 640×350 EGA; 640×480 VGA; 800×600 SVGA; 1024×768 XGA; 1280×720 720p HDTV; 1280×768 WXGA variant; 1280×800 WXGA variant; 1280×1024 SXGA; 1366×768 WXGA variant; 1400×1050 SXGA+; 1600×1200 UXGA; 1680×1050 WXGA+; 1920×1080 1080p HDTV; 1920×1200 WUXGA.[39] Higher resolutions, up to 2048×1152, may work[40][41] or even 3840×2160 at 15 Hz (too low a frame rate for convincing video).[42] Note also that allowing the highest resolutions does not imply that the GPU can decode video formats at these resolutions; in fact, the Pis are known to not work reliably for H.265 (at those high resolutions), commonly used for very high resolutions (however, most common formats up to Full HD do work). Although the Raspberry Pi 3 does not have H.265 decoding hardware, the CPU is more powerful than its predecessors, potentially fast enough to allow the decoding of H.265-encoded videos in software.[43] The GPU in the Raspberry Pi 3 runs at higher clock frequencies of 300 MHz or 400 MHz, compared to previous versions which ran at 250 MHz.[44] The Raspberry Pis can also generate 576i and 480i composite video signals, as used on old-style (CRT) TV screens and less-expensive monitors through standard connectors{{snd}}either RCA or 3.5 mm phono connector depending on model. The television signal standards supported are PAL-BGHID, PAL-M, PAL-N, NTSC and NTSC-J.[45] Real-time clockNone of the current Raspberry Pi models have a built-in real-time clock, so they are unable to keep track of the time of day independently. Instead, a program running on the Pi can retrieve the time from a network time server or from user input at boot time, thus knowing the time while powered on. To provide consistency of time for the file system, the Pi automatically saves the current system time on shutdown, and re-loads that time at boot. A real-time hardware clock with battery backup, such as the DS1307, may be added (often via the I²C interface). Note however that this conflicts with the camera's CSI interface, effectively disabling the camera. Specifications
Connectors{{col-begin}}{{col-break}}Pi ZeroModel AModel BGeneral purpose input-output (GPIO) connectorRaspberry Pi 1 Models A+ and B+, Pi 2 Model B, Pi 3 Models A+, B and B+, and Pi Zero and Zero W GPIO J8 have a 40-pin pinout.[89][90] Raspberry Pi 1 Models A and B have only the first 26 pins.[91][92][93]
Model B rev. 2 also has a pad (called P5 on the board and P6 on the schematics) of 8 pins offering access to an additional 4 GPIO connections.[94]
Models A and B provide GPIO access to the ACT status LED using GPIO 16. Models A+ and B+ provide GPIO access to the ACT status LED using GPIO 47, and the power status LED using GPIO 35. Accessories
SoftwareOperating systemsThe Raspberry Pi Foundation provides Raspbian, a Debian-based Linux distribution for download, as well as third-party Ubuntu, Windows 10 IoT Core, RISC OS, and specialised media centre distributions.[105] It promotes Python and Scratch as the main programming languages, with support for many other languages.[106] The default firmware is closed source, while an unofficial open source is available.[107][108][109] Many other operating systems can also run on the Raspberry Pi, including the formally verified microkernel, seL4.[110] Other third-party operating systems available via the official website include Ubuntu MATE, Windows 10 IoT Core, RISC OS and specialised distributions for the Kodi media centre and classroom management.[111]
Driver APIs{{See also|VideoCore#Linux support}}Raspberry Pi can use a VideoCore IV GPU via a binary blob, which is loaded into the GPU at boot time from the SD-card, and additional software, that initially was closed source.[142] This part of the driver code was later released.[191] However, much of the actual driver work is done using the closed source GPU code. Application software makes calls to closed source run-time libraries (OpenMax, OpenGL ES or OpenVG), which in turn call an open source driver inside the Linux kernel, which then calls the closed source VideoCore IV GPU driver code. The API of the kernel driver is specific for these closed libraries. Video applications use OpenMAX, {{nowrap|3D applications}} use OpenGL ES and {{nowrap|2D applications}} use OpenVG, which both in turn use EGL. OpenMAX and EGL use the open source kernel driver in turn.[143] FirmwareThe official firmware is a freely redistributable[144] binary blob, that is closed-source.[122] A minimal proof-of-concept open source firmware is also available, mainly aimed at initializing and starting the ARM cores as well as performing minimal startup that is required on the ARM side. It is also capable of booting a very minimal Linux kernel, with patches to remove the dependency on the mailbox interface being responsive. It is known to work on Raspberry Pi 1, 2 and 3, as well as some variants of Raspberry Pi Zero. While it is in a working state, it is not actively developed, with last significant commits made around mid-2017.[145] Third party application software
Software development tools
Reception and useTechnology writer Glyn Moody described the project in May 2011 as a "potential {{nowrap|BBC Micro 2.0}}", not by replacing {{nowrap|PC compatible}} machines but by supplementing them.[169] In March 2012 Stephen Pritchard echoed the BBC Micro successor sentiment in ITPRO.[170] Alex Hope, co-author of the Next Gen report, is hopeful that the computer will engage children with the excitement of programming.[171] Co-author Ian Livingstone suggested that the BBC could be involved in building support for the device, possibly branding it as the BBC Nano.[172] Chris Williams, writing in The Register sees the inclusion of programming languages such as Kids Ruby, Scratch and BASIC as a "good start" to equip children with the skills needed in the future – although it remains to be seen how effective their use will be.[223] The Centre for Computing History strongly supports the Raspberry Pi project, feeling that it could "usher in a new era".[224] Before release, the board was showcased by ARM's CEO Warren East at an event in Cambridge outlining Google's ideas to improve UK science and technology education.[173] Harry Fairhead, however, suggests that more emphasis should be put on improving the educational software available on existing hardware, using tools such as Google App Inventor to return programming to schools, rather than adding new hardware choices.[174] Simon Rockman, writing in a ZDNet blog, was of the opinion that teens will have "better things to do", despite what happened in the 1980s.[175] In October 2012, the Raspberry Pi won T3's Innovation of the Year award,[176] and futurist Mark Pesce cited a (borrowed) Raspberry Pi as the inspiration for his ambient device project MooresCloud.[177] In October 2012, the British Computer Society reacted to the announcement of enhanced specifications by stating, "it's definitely something we'll want to sink our teeth into."[178] In February 2015, a switched-mode power supply chip, designated U16, of the Raspberry Pi 2 Model B version 1.1 (the initially released version) was found to be vulnerable to flashes of light,[179] particularly the light from xenon camera flashes and green[180] and red laser pointers. However, other bright lights, particularly ones that are on continuously, were found to have no effect. The symptom was the Raspberry Pi 2 spontaneously rebooting or turning off when these lights were flashed at the chip. Initially, some users and commenters suspected that the electromagnetic pulse (EMP) from the xenon flash tube was causing the problem by interfering with the computer's digital circuitry, but this was ruled out by tests where the light was either blocked by a card or aimed at the other side of the Raspberry Pi 2, both of which did not cause a problem. The problem was narrowed down to the U16 chip by covering first the system on a chip (main processor) and then U16 with Blu-Tack (an opaque poster mounting compound). Light being the sole culprit, instead of EMP, was further confirmed by the laser pointer tests,[180] where it was also found that less opaque covering was needed to shield against the laser pointers than to shield against the xenon flashes.[179] The U16 chip seems to be bare silicon without a plastic cover (i.e. a chip-scale package or wafer-level package), which would, if present, block the light. Unofficial workarounds include covering U16 with opaque material (such as electrical tape,[179][180] lacquer, poster mounting compound, or even balled-up bread[179]), putting the Raspberry Pi 2 in a case,[180] and avoiding taking photos of the top side of the board with a xenon flash. This issue was not caught before the release of the Raspberry Pi 2 because while commercial electronic devices are routinely subjected to tests of susceptibility to radio interference, it is not standard or common practice to test their susceptibility to optical interference.[179] In June 2017, Raspberry Pi won the Royal Academy of Engineering MacRobert Award.[181] The citation for the award to the Raspberry Pi said it was "for its inexpensive credit card-sized microcomputers, which are redefining how people engage with computing, inspiring students to learn coding and computer science and providing innovative control solutions for industry."[182] CommunityThe Raspberry Pi community was described by Jamie Ayre of FLOSS software company AdaCore as one of the most exciting parts of the project.[242] Community blogger Russell Davis said that the community strength allows the Foundation to concentrate on documentation and teaching.[242] The community developed a fanzine around the platform called The MagPi[183] which in 2015, was handed over to the Raspberry Pi Foundation by its volunteers to be continued in-house.[184] A series of community Raspberry Jam events have been held across the UK and around the world.[185] Use in education{{As of|January 2012}}, enquiries about the board in the United Kingdom have been received from schools in both the state and private sectors, with around five times as much interest from the latter. It is hoped that businesses will sponsor purchases for less advantaged schools.[247] The CEO of Premier Farnell said that the government of a country in the Middle East has expressed interest in providing a board to every schoolgirl, to enhance her employment prospects.[186][187]In 2014, the Raspberry Pi Foundation hired a number of its community members including ex-teachers and software developers to launch a set of free learning resources for its website.[188] The Foundation also started a teacher training course called Picademy with the aim of helping teachers prepare for teaching the new computing curriculum using the Raspberry Pi in the classroom.[189] In 2018, NASA launched the JPL Open Source Rover Project, which is a scaled down of Curiosity rover and uses a Raspberry Pi as the control module, to encourage students and hobbyists to get involved in mechanical, software, electronics, and robotics engineering.[190] Use in home automationThere are a number of developers and applications that are leveraging the Raspberry Pi for home automation. These programmers are making an effort to modify the Raspberry Pi into a cost-affordable solution in energy monitoring and power consumption. Because of the relatively low cost of the Raspberry Pi, this has become a popular and economical alternative to the more expensive commercial solutions.[191] Use in industrial automationIn June 2014, Polish industrial automation manufacturer TECHBASE released ModBerry, an industrial computer based on the Raspberry Pi Compute Module. The device has a number of interfaces, most notably RS-485/232 serial ports, digital and analogue inputs/outputs, CAN and economical 1-Wire buses, all of which are widely used in the automation industry. The design allows the use of the Compute Module in harsh industrial environments, leading to the conclusion that the Raspberry Pi is no longer limited to home and science projects, but can be widely used as an Industrial IoT solution and achieve goals of Industry 4.0.[192] In March 2018, SUSE announced commercial support for SUSE Linux Enterprise on the Raspberry Pi 3 Model B to support a number of undisclosed customers implementing industrial monitoring with the Raspberry Pi.[193] Use in commercial productsOTTO is a digital camera created by Next Thing Co. It incorporates a Raspberry Pi Compute Module. It was successfully crowd-funded in a May 2014 Kickstarter campaign.[194] Slice is a digital media player which also uses a Compute Module as its heart. It was crowd-funded in an August 2014 Kickstarter campaign. The software running on Slice is based on Kodi.[195] Astro PiA project was launched in December 2014 at an event held by the UK Space Agency. The Astro Pi competition was officially opened in January and was opened to all primary and secondary school aged children who were residents of the United Kingdom. During his mission, British ESA astronaut Tim Peake deployed the computers on board the International Space Station.[196] He loaded the winning code while in orbit, collected the data generated and then sent this to Earth where it was distributed to the winning teams. Covered themes during the competition included Spacecraft Sensors, Satellite Imaging, Space Measurements, Data Fusion and Space Radiation. The organisations involved in the Astro Pi competition include the UK Space Agency, UKspace, Raspberry Pi, ESERO-UK and ESA. History{{Prose|section|date=February 2015}}In 2006, early concepts of the Raspberry Pi were based on the Atmel ATmega644 microcontroller. Its schematics and PCB layout are publicly available.[197] Foundation trustee Eben Upton assembled a group of teachers, academics and computer enthusiasts to devise a computer to inspire children.[198] The computer is inspired by Acorn's BBC Micro of 1981.[199][200] The Model A, Model B and Model B+ names are references to the original models of the British educational BBC Micro computer, developed by Acorn Computers.[201] The first ARM prototype version of the computer was mounted in a package the same size as a USB memory stick.[202] It had a USB port on one end and an HDMI port on the other. The Foundation's goal was to offer two versions, priced at US$25 and $35. They started accepting orders for the higher priced Model B on 29 February 2012,[203] the lower cost Model A on 4 February 2013.[204] and the even lower cost (US$20) A+ on 10 November 2014.[47] On 26 November 2015, the cheapest Raspberry Pi yet, the Raspberry Pi Zero, was launched at US$5 or £4.[205] Pre-launch
Launch
Post-launch
See also{{Portal|Computing|Electronics}}
References1. ^{{cite web |title= Raspberry Pi 3 is out now! Specs, Benchmarks & More |date= 1 April 2016 |publisher= The MagPi Magazine |url= https://www.raspberrypi.org/magpi/raspberry-pi-3-specs-benchmarks/}} 2. ^{{cite web |title=Windows 10 for IoT |date=30 April 2015 |publisher=Raspberry Pi Foundation| url=https://www.raspberrypi.org/blog/windows-10-for-iot/}} 3. ^{{cite web |last= Cellan-Jones |first= Rory |title= A£15 computer to inspire young programmers |work=BBC News|date= 5 May 2011 |url= http://www.bbc.co.uk/blogs/thereporters/rorycellanjones/2011/05/a_15_computer_to_inspire_young.html }} 4. ^{{Cite news |last= Price |first= Peter |title= Can a £15 computer solve the programming gap? |publisher= BBC Click |date= 3 June 2011 |url= http://news.bbc.co.uk/2/hi/programmes/click_online/9504208.stm |accessdate= 2 July 2011}} 5. ^{{cite web |url= http://www.electronicsweekly.com/Articles/2011/05/25/51129/Dongle-computer-lets-kids-discover-programming-on-a.htm |title= Dongle computer lets kids discover programming on a TV |accessdate= 11 July 2011 |last= Bush |first= Steve |date= 25 May 2011 |work= Electronics Weekly}} 6. ^{{cite web|url=https://www.theguardian.com/technology/2015/feb/18/raspberry-pi-becomes-best-selling-british-computer|title=Raspberry Pi becomes best selling British computer|date=18 February 2015|first=Samuel|last=Gibbs|work=The Guardian|accessdate=28 December 2016}} 7. ^{{Cite news|url=https://www.raspberrypi.org/blog/ten-millionth-raspberry-pi-new-kit/|title=Ten millionth Raspberry Pi, and a new kit – Raspberry Pi|date=8 September 2016|newspaper=Raspberry Pi|access-date=1 February 2017}} 8. ^{{Cite news|url=https://www.theverge.com/circuitbreaker/2017/3/17/14962170/raspberry-pi-sales-12-5-million-five-years-beats-commodore-64|title=Raspberry Pi sold over 12.5 million boards in five years|work=The Verge|access-date=27 September 2017}} 9. ^{{Cite news|url=https://betanews.com/2017/07/19/raspberry-pi-eben-upton-qa/|title=Raspberry Pi founder Eben Upton talks sales numbers, proudest moments, community projects, and Raspberry Pi 4 [Q&A]|work=Betanews|access-date=9 November 2017}} 10. ^1 2 3 4 5 6 {{cite news |last=Upton |first=Eben |authorlink=Eben Upton |url=https://www.raspberrypi.org/blog/raspberry-pi-3-model-bplus-sale-now-35/ |title=Raspberry Pi 3 Model B+ on Sale at $35 |work=Raspberry Pi Blog |publisher=Raspberry Pi Foundation |date=14 March 2018 |accessdate=2018-05-04 }} 11. ^{{Cite web|url=http://www.sonypencoed.co.uk/about/|title=About Us|website=sonypencoed.co.uk|access-date=27 September 2017}} 12. ^{{cite web |last1=Tung |first1=Liam |title=Raspberry Pi: 14 million sold, 10 million made in the UK {{!}} ZDNet |url=https://www.zdnet.com/article/14-million-raspberry-pis-sold-10-million-made-in-the-uk/ |website=ZDNet |language=en |date=27 July 2017}} 13. ^{{Cite news|url=https://arstechnica.com/information-technology/2017/02/new-10-raspberry-pi-zero-comes-with-wi-fi-and-bluetooth/|title=New $10 Raspberry Pi Zero comes with Wi-Fi and Bluetooth|work=Ars Technica|access-date=28 February 2017}} 14. ^{{Cite news|url=http://www.pcworld.com/article/3175256/computers/the-10-raspberry-pi-zero-w-brings-wi-fi-and-bluetooth-to-the-minusule-micro-pc.html|title=The $10 Raspberry Pi Zero W brings Wi-Fi and Bluetooth to the minuscule micro|work=PC World|access-date=28 February 2017}} 15. ^{{Cite news|url=https://www.raspberrypi.org/blog/zero-wh|title=Zero WH: Pre-soldered headers and what to do with them|work=Raspberry Pi Foundation|access-date=12 January 2018}} 16. ^{{cite news|url=https://www.raspberrypi.org/magpi/pi-3-interview/|title=Eben Upton talks Raspberry Pi 3 |work=The MagPi Magazine|date=29 February 2016}} 17. ^{{cite news|url=http://www.grandmax.net/2012/01/broadcom-bcm2835-soc-has-powerful.html|archive-url=https://web.archive.org/web/20120218012632/http://www.grandmax.net/2012/01/broadcom-bcm2835-soc-has-powerful.html|dead-url=yes|archive-date=18 February 2012|title=Broadcom BCM2835 SoC has the most powerful mobile GPU in the world?|date=30 January 2012|work=Grand MAX|accessdate=13 April 2012|author=Brose, Moses|df=dmy-all}} 18. ^{{Cite news|url=https://www.anandtech.com/show/2782|title=The iPhone 3GS Hardware Exposed & Analyzed|last=Shimpi|first=Anand Lal|access-date=2018-10-11}} 19. ^1 2 {{cite web| url=https://www.raspberrypi.org/blog/raspberry-pi-2-on-sale/ |title=Raspberry Pi 2 on sale now at $35 |publisher=Raspberry Pi Foundation |accessdate=5 August 2015}} 20. ^{{cite web|url=http://docs-europe.electrocomponents.com/webdocs/1568/0900766b8156853c.pdf|title=Raspberry Pi 2, Model B V1.2 Technical Specifications|publisher=RS Components|accessdate=20 September 2017}} 21. ^{{cite web|title=Performance – measures of the Raspberry Pi's performance.|url=http://elinux.org/RPi_Performance|work=RPi Performance|publisher=eLinux.org|accessdate=30 March 2014}} 22. ^{{cite web|last=Benchoff|first=Brian|title=64 Rasberry Pis turned into a supercomputer|url=http://hackaday.com/2012/09/12/64-rasberry-pis-turned-into-a-supercomputer/|publisher=Hackaday|accessdate=30 March 2014}} 23. ^{{cite web|title=Raspberry Pi2 – Power and Performance Measurement|url=http://raspi.tv/2015/raspberry-pi2-power-and-performance-measurement|website=RasPi.TV|publisher=RasPi.TV|accessdate=6 July 2016}} 24. ^1 {{Cite web|url=https://www.raspberrypi.org/blog/raspberry-pi-3-on-sale/|title=Raspberry Pi 3 on sale now at $35 – Raspberry Pi|last=Upton|first=Eben|date=29 February 2016|website=Raspberry Pi|access-date=29 February 2016}} 25. ^{{cite web|title=How Much Power Does Raspberry Pi3B Use? How Fast Is It Compared To Pi2B?|url=http://raspi.tv/2016/how-much-power-does-raspberry-pi3b-use-how-fast-is-it-compared-to-pi2b|website=RasPi.TV|publisher=RasPi.TV|accessdate=6 July 2016}} 26. ^1 {{cite web|title=Introducing turbo mode: up to 50% more performance for free| url=http://www.raspberrypi.org/introducing-turbo-mode-up-to-50-more-performance-for-free/ | publisher=Raspberrypi.org| accessdate=20 September 2012}} 27. ^{{cite web|url=https://github.com/asb/raspi-config/blob/master/raspi-config|title=asb/raspi-config on Github| publisher=asb|accessdate=11 May 2017}} 28. ^[https://www.raspberrypi.org/documentation/configuration/config-txt/overclocking.md] Overclocking options – raspberrypi.org 29. ^{{cite web|url=https://www.reddit.com/r/raspberry_pi/comments/oicyr/i_have_a_raspberry_pi_beta_board_ama/c3hj3n0 |title=I have a Raspberry Pi Beta Board AMA |publisher=Reddit.com |date=15 January 2012 |accessdate=6 May 2012}} 30. ^Raspberry Pi boot configuration text file {{webarchive|url=https://web.archive.org/web/20120316062124/http://www.raspberrypi.org/forum/general-discussion/config-txt/page-3 |date=16 March 2012 }} 31. ^{{cite web |url=http://www.raspberrypi.org/forum/general-discussion/nokia-701-has-a-similar-broadcom-gpu |title=Nokia 701 has a similar Broadcom GPU |publisher=Raspberrypi.org |date=2 February 2012 |accessdate=22 June 2012 |deadurl=yes |archiveurl=https://web.archive.org/web/20120205011054/http://www.raspberrypi.org/forum/general-discussion/nokia-701-has-a-similar-broadcom-gpu |archivedate=5 February 2012 |df=dmy-all }} 32. ^{{cite web|url=http://www.raspberrypi.org/archives/2296|title=introducing new firmware for the 512 MB Pi|accessdate=16 September 2014}} 33. ^{{cite web|url=https://www.raspberrypi.org/magpi/raspberry-pi-3-specs-benchmarks/ |title=Raspberry Pi 3 specs |website=raspberrypi.com |publisher=Magpi |accessdate=1 October 2016}} 34. ^{{cite web|url=https://www.raspberrypi.org/products/raspberry-pi-2-model-b/ |title=Raspberry Pi 2 specs |website=raspberrypi.com |accessdate=1 October 2016}} 35. ^{{cite web|url=https://github.com/seemoo-lab/nexmon|title=seemoo-lab/nexmon|website=GitHub}} 36. ^1 {{cite web|url=https://learn.adafruit.com/turning-your-raspberry-pi-zero-into-a-usb-gadget/overview|title=Turning your Pi Zero into a USB gadget}} 37. ^{{cite web|url=https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmodes/msd.md|title=How to boot from a USB mass storage device}} 38. ^{{Cite web|url=https://www.raspberrypi.org/documentation/usage/gpio-plus-and-raspi2/|title=GPIO: Models A+, B+, Raspberry Pi 2 B and Raspberry Pi 3 B – Raspberry Pi Documentation|website=raspberrypi.org|access-date=28 February 2017}} 39. ^{{cite web|url=http://elinux.org/RPi_config.txt |title=Raspberry Pi, supported video resolutions |publisher=eLinux.org |date=30 November 2012 |accessdate=11 December 2012}} 40. ^{{cite web |url=https://www.riscosopen.org/forum/forums/5/topics/2144 |title=Pi Screen limited to 1920 by RISC OS:- |work=RISC OS Open |quote=2048 × 1152 monitor is the highest resolution the Pi's GPU can handle [presumably with non-low frame-rate ..] The monitors screen info confirms the GPU is outputting 2048×1152 |accessdate=6 January 2016}} 41. ^{{cite web|url=https://www.riscosopen.org/forum/forums/5/topics/2653|title=RISC OS Open: Forum: Latest Pi firmware?}} 42. ^{{cite web |url=https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=79330 |title=Raspberry Pi and 4k @ 15Hz |quote=I have managed to get 3840 x 2160 (4k x 2k) at 15Hz on a Seiki E50UY04 working |accessdate=6 January 2016}} 43. ^{{cite web |url=https://osmc.tv/2016/02/raspberry-pi-3-announced-with-osmc-support/ |title=Raspberry Pi 3 announced with OSMC support |date=28 February 2016}} 44. ^{{cite web |url=http://docs-europe.electrocomponents.com/webdocs/14ba/0900766b814ba5fd.pdf |title=Raspberry Pi 3 Model B.}} 45. ^{{cite web |last=Ozolins |first=Jason |url=http://www.raspberrypi.org/forum/general-discussion/pictures-of-screen-displaying-example-of-rpi-composite-output?value=480i&type=1&include=2&search=1 |archive-url=https://archive.is/20130113113342/http://www.raspberrypi.org/forum/general-discussion/pictures-of-screen-displaying-example-of-rpi-composite-output?value=480i&type=1&include=2&search=1 |dead-url=yes |archive-date=13 January 2013 |title=examples of Raspberry Pi composite output |publisher=Raspberrypi.org |accessdate=22 June 2012 }} 46. ^1 {{cite web| url=https://www.raspberrypi.org/blog/model-a-now-for-sale-in-europe-buy-one-today/ |title=Model A now for sale in Europe – buy one today! |publisher=Raspberry Pi Foundation |accessdate=25 February 2017}} 47. ^1 2 3 {{cite web| url=http://www.raspberrypi.org/blog/#raspberry-pi-model-a-plus-on-sale| title=Introducing Raspberry Pi Model A+ |publisher=Raspberry Pi Foundation |accessdate=10 November 2014}} 48. ^1 2 3 {{cite web| url=http://www.raspberrypi.org/introducing-raspberry-pi-model-b-plus/ |title=Introducing Raspberry Pi Model B+ |publisher=Raspberry Pi Foundation |accessdate=14 July 2014}} 49. ^http://www.farnell.com/datasheets/2163186.pdf?_ga=1.9528053.1789915275.1482632652 50. ^{{Cite news|url=https://arstechnica.com/information-technology/2014/04/raspberry-pi-gets-more-arduino-y-with-new-open-source-modular-hardware/|title=Raspberry Pi gets more Arduino-y with new open source modular hardware|work=Ars Technica|access-date=2018-06-19|language=en-us}} 51. ^{{cite news|last1=Brodkin|first1=Jon|title=Raspberry Pi upgrades Compute Module with 10 times the CPU performance|url=https://arstechnica.com/information-technology/2017/01/raspberry-pi-upgrades-compute-module-with-10-times-the-cpu-performance/|accessdate=16 January 2017|publisher=Ars Technica|date=16 January 2017}} 52. ^1 {{cite web |last1=Adams |first1=James |title=Compute Module 3+ on sale now from $25 |url=https://www.raspberrypi.org/blog/compute-module-3-on-sale-now-from-25/ |website=raspberrypi.org |accessdate=29 January 2019}} 53. ^1 2 3 4 {{cite web|url=https://www.raspberrypi.org/blog/raspberry-pi-zero/|title=Raspberry Pi Zero: the $5 Computer|publisher=Raspberry Pi Foundation|accessdate=26 November 2015}} 54. ^{{cite news| url=https://www.telegraph.co.uk/technology/news/9112841/Mini-Raspberry-Pi-computer-goes-on-sale-for-22.html |location=London |work=The Daily Telegraph |first=Donna |last=Bowater |title=Mini Raspberry Pi computer goes on sale for £22 |date=29 February 2012}} 55. ^{{cite web |url =https://www.raspberrypi.org/blog/price-cut-raspberry-pi-model-b-now-only-25/|title=Price Cut! Raspberry Pi Model B+ Now Only $25|date=14 May 2015|author=Eben Upton}} 56. ^1 2 3 4 5 {{cite web| url=http://www.raspberrypi.org/raspberry-pi-compute-module-new-product/ |title=Raspberry Pi Compute Module: New Product! |publisher=Raspberry Pi Foundation| accessdate=22 September 2014}} 57. ^1 2 3 4 {{cite web|url=http://www.broadcom.com/products/BCM2835 |title=BCM2835 Media Processor; Broadcom |publisher=Broadcom.com |date=1 September 2011 |accessdate=6 May 2012 |deadurl=yes |archiveurl=https://web.archive.org/web/20120513032855/http://www.broadcom.com/products/BCM2835 |archivedate=13 May 2012 }} 58. ^1 {{cite web|title=Q&A with our hardware team |publisher=Raspberry Pi Foundation |url=http://www.raspberrypi.org/2011/09/qa-with-our-hardware-team/ |accessdate=20 September 2011 |deadurl=yes |archiveurl=https://web.archive.org/web/20110924064435/http://www.raspberrypi.org/2011/09/qa-with-our-hardware-team/ |archivedate=24 September 2011 }} 59. ^{{cite web|last=Halfacree|first=Gareth|title=Raspberry Pi review |quote=The Model B|url=http://www.bit-tech.net/hardware/pcs/2012/04/16/raspberry-pi-review/2|work=bit-tech.net|publisher=Dennis Publishing Limited|accessdate=10 June 2013}} 60. ^{{cite web |url =http://uk.farnell.com/raspberry-pi/raspbrry-moda-512m/sbc-raspberry-pi-model-a-512mb/dp/2536236|title=Raspberry Pi Model A+ 512MB |publisher=Farnell |accessdate=4 May 2016}} 61. ^1 2 3 {{cite web|url=http://elinux.org/RaspberryPiBoardVerifiedPeripherals |title=Verified USB Peripherals and SDHC Cards; |publisher=Elinux.org |accessdate=6 May 2012}} 62. ^1 {{cite web|url=http://www.smsc.com/index.php?tid=300&pid=135 |title=SMSC LAN9512 Website; |publisher=Smsc.com |accessdate=6 May 2012}} 63. ^1 {{cite web|url=http://ww1.microchip.com/downloads/en/DeviceDoc/9514.pdf |title=Microchip/SMSC LAN9514 data sheet; |publisher=Microchip|accessdate=15 July 2014}} 64. ^1 {{cite web|url=http://www.microchip.com/wwwproducts/ProductCompare/LAN7515/LAN9514 |title=ProductCompare LAN7515 LAN9514 |publisher=Microchip|accessdate=2018-03-14}} 65. ^{{cite web|url=http://elinux.org/File:Raspi-Model-AB-Mono-2-699x1024.png |title=diagram of Raspberry Pi with CSI camera connector |publisher=Elinux.org |date=2 March 2012 |accessdate=22 June 2012}} 66. ^1 {{cite web |url=http://www.raspberrypi.org/documentation/hardware/computemodule/RPI-CMIO-V1_2-SCHEMATIC.pdf |title=Raspberry Pi Compute Module IO Board electrical schematic diagram |publisher=Raspberry Pi Foundation |date=3 April 2014 |accessdate=22 September 2014 |author=Adams, James}} 67. ^{{cite web|url=https://www.raspberrypi.org/blog/zero-grows-camera-connector/|title=zero grows camera connector|date=16 May 2016|publisher=Raspberry Pi Foundation|accessdate=17 May 2016|author=Upton, Eben}} 68. ^{{cite web|url=http://elinux.org/Rpi_Screens |title=Raspberry Pi Wiki, section screens |publisher=Elinux.org |accessdate=6 May 2012}} 69. ^{{cite web|url=http://elinux.org/File:Raspi-Model-AB-Mono-2-699x1024.png |title=diagram of Raspberry Pi with DSI LCD connector |publisher=Elinux.org |accessdate=6 May 2012}} 70. ^1 {{cite web |url=http://www.raspberrypi.org/documentation/hardware/computemodule/RPI-CM-V1_1-SCHEMATIC.pdf |title=Raspberry Pi Compute Module electrical schematic diagram |publisher=Raspberry Pi Foundation |date=3 April 2014 |accessdate=22 September 2014 |author=Adams, James}} 71. ^{{cite web |url=http://www.raspberrypi.org/raspberry-pi-compute-module-new-product/#comment-509472 |title=Comment by James Adams on Compute Module announcement |publisher=Raspberry Pi Foundation |date=7 April 2014 |accessdate=22 September 2014 |author=Adams, James}} 72. ^{{cite web|url=https://www.pi-supply.com/pi-zero-the-new-raspberry-pi-board/?v=c86ee0d9d7ed|title=Pi Zero – The New Raspberry Pi Board • Pi Supply|work=Pi Supply}} 73. ^{{cite web|url=http://www.raspberrypi.org/phpBB3/viewtopic.php?t=8496|title=I2S driver development thread|accessdate=16 September 2014}} 74. ^{{cite web|url=https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmodes/msd.md|title=How to boot from a USB Mass Storage Device on a Raspberry Pi 3 |publisher= Raspberry Pi Documentation}} 75. ^1 {{Cite web |url=http://www.elinux.org/How_to_use_an_Android_tablet_as_a_Raspberry_Pi_console_terminal_and_internet_router |title=Use an Android tablet as a Raspberry Pi Console terminal and Internet router |publisher=Elinux.org |accessdate=2 October 2015}} 76. ^{{Cite news|url=https://www.raspberrypi.org/magpi/raspberry-pi-specs-benchmarks/|title=Raspberry Pi 3B+ Specs and Benchmarks - The MagPi Magazine|date=2018-03-14|work=The MagPi Magazine|access-date=2018-08-17|language=en-GB}} 77. ^More GPIOs can be used if the low level peripherals are unused 78. ^Since the release of the revision 2 model 79. ^{{cite web|url=http://elinux.org/RPi_Low-level_peripherals |title=Raspberry Pi GPIO Connector; |publisher=Elinux.org |accessdate=6 May 2012}} 80. ^{{cite web |url=http://www.raspberrypi.org/raspberry-pi-compute-module-new-product/#comment-509549 |title=Comment by James Adams on Compute Module announcement |publisher=Raspberry Pi Foundation |date=7 April 2014 |accessdate=22 September 2014 |author=Adams, James}} 81. ^{{cite web|url=http://www.raspberrypi.org/archives/260 |title=Power supply confirmed as 5V micro USB |publisher=Raspberrypi.org |accessdate=25 July 2012}} 82. ^{{cite web|url=http://www.raspi.today/raspberry-pi-model-a-plus-out-now/|title=Features|last=raspi.today|publisher=Raspberry Pi Today|deadurl=yes|archiveurl=https://web.archive.org/web/20150727005908/http://www.raspi.today/raspberry-pi-model-a-plus-out-now/|archivedate=27 July 2015|df=dmy-all}} 83. ^1 2 3 4 {{Cite news|url=https://www.raspberrypi.org/help/faqs/#powerReqs|title=Raspberry Pi FAQs – Frequently Asked Questions|work=Raspberry Pi|access-date=8 April 2017}} 84. ^https://www.raspberrypi.org/magpi/wp-content/uploads/2018/03/Raspberry-Pi-Benchmarks-Power-Draw.jpg 85. ^{{Cite web |url=https://socialcompare.com/en/review/raspberry-pi-3 |title=Raspberry Pi 3 - Social Compare}} 86. ^{{cite web |url=http://www.raspberrypi.org/raspberry-pi-compute-module-new-product/#comment-509481 |title=Comment by James Adams on Compute Module announcement |publisher=Raspberry Pi Foundation |date=7 April 2014 |accessdate=22 September 2014 |author=Adams, James}} 87. ^{{cite web |url=https://www.raspberrypi.org/magpi-issues/MagPi40.pdf |title=MagPi, issue 40, Raspberry Pi Zero release article |publisher=Raspberry Pi Foundation |date=26 November 2015 |accessdate=26 November 2015}} 88. ^{{Cite web |url=http://www.elinux.org/RPi_Serial_Connection |title=Raspberry Pi USB Serial Connection and power supply |publisher=Elinux.org |accessdate=2 October 2015}} 89. ^http://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/Raspberry-Pi-B-Plus-V1.2-Schematics.pdf 90. ^https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/RPI-3B-V1_2-SCHEMATIC-REDUCED.pdf 91. ^https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/Raspberry-Pi-Rev-1.0-Model-AB-Schematics.pdf 92. ^https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/Raspberry-Pi-Rev-2.0-Model-AB-Schematics.pdf 93. ^https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/Raspberry-Pi-Rev-2.1-Model-AB-Schematics.pdf 94. ^http://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/Raspberry-Pi-Rev-2.1-Model-AB-Schematics.pdf 95. ^{{cite web|url=http://www.raspberrypi.org/archives/1734|title=Gertboard is here!|date=8 August 2012|publisher=Raspberry Pi Foundation|accessdate=9 August 2012}} 96. ^{{cite web|title=Elinux Wiki: Description of Raspberry Pi Camera Board|url=http://elinux.org/Rpi_Camera_Module|accessdate=3 September 2013}} 97. ^1 {{cite web|title=RPI Camera board – Raspberry-Pi – Raspberry Pi Kamera-Board, 5MP | Farnell Deutschland |url=http://de.farnell.com/raspberry-pi/rpi-camera-board/raspberry-pi-camera-board-5mp/dp/2302279 |accessdate=9 June 2013|publisher=de.farnell.com}} 98. ^{{cite web|url=http://www.raspberrypi.org/tag/pi-noir/|title=Pi NoIR|publisher=Raspberry Pi Foundation|accessdate=16 August 2014}} 99. ^{{cite web|url=https://www.raspberrypi.org/blog/the-eagerly-awaited-raspberry-pi-display/|title=The Eagarly awaited Raspberry Pi Display|publisher=Raspberry Pi Foundation|accessdate=18 November 2017}} 100. ^{{cite web|url=https://github.com/raspberrypi/hats/blob/master/eeprom-circuit.png|title=hats/eeprom-circuit.png at master · raspberrypi/hats · GitHub|work=GitHub|accessdate=16 September 2014}} 101. ^{{cite web|url=https://github.com/raspberrypi/hats/blob/master/eeprom-format.md|title=hats/eeprom-format.md at master · raspberrypi/hats · GitHub|work=GitHub|accessdate=16 September 2014}} 102. ^{{cite web|url=https://github.com/raspberrypi/hats|title=raspberrypi/hats · GitHub|work=GitHub|accessdate=16 September 2014}} 103. ^{{cite web|url=https://github.com/raspberrypi/hats/blob/master/hat-board-mechanical.pdf|title=hats/hat-board-mechanical.pdf at master · raspberrypi/hats · GitHub|author=raspberrypi|work=GitHub}} 104. ^{{cite web|url=https://github.com/raspberrypi/hats|title=GitHub – raspberrypi/hats |author="raspberrypi" in title seem code for--> Raspberry Pi Foundation |publisher=GitHub}} 105. ^{{cite web|url=http://www.raspberrypi.org/downloads|title=Raspberry Pi downloads|website=|access-date=12 August 2016}} 106. ^{{Cite web|url=https://www.raspberrypi.org/documentation/usage/|title=Usage – Raspberry Pi Documentation|website=raspberrypi.org|access-date=12 August 2016}} 107. ^{{cite web|url=http://crna.cc/cat/research|title=Blobless Linux on Raspberry Pi (rpi-open-firmware).|access-date=20 July 2017}} 108. ^{{cite web|url=https://github.com/christinaa/rpi-open-firmware|title=christinaa/rpi-open-firmware: Open source VPU side bootloader for Raspberry Pi.|access-date=20 July 2017}} 109. ^{{cite web|url=http://www.cnx-software.com/2016/05/16/preliminary-open-source-bootloader-for-raspberry-pi-boards-released/|title=Preliminary Open Source Bootloader for Raspberry Pi Boards Released|access-date=20 July 2017}} 110. ^{{Cite web|url=https://docs.sel4.systems/Hardware/|title=Supported Platforms|website=docs.sel4.systems|access-date=2018-11-23}} 111. ^{{Cite web|url=https://www.raspberrypi.org/downloads/|title=Raspberry Pi Downloads – Software for the Raspberry Pi|access-date=12 August 2016}} 112. ^[https://lwn.net/Articles/588950/ Broadcom releases SoC graphics driver source] 113. ^{{cite web|title=FreeBSD – Raspberry Pi|url=http://kernelnomicon.org/?p=275}} 114. ^{{cite web|title=FreeBSD/ARM on Raspberry Pi|url=https://wiki.freebsd.org/FreeBSD/arm/Raspberry%20Pi}} 115. ^{{cite web|title=NetBSD – Raspberry Pi|url=http://mail-index.netbsd.org/port-arm/2012/07/13/msg001367.html}} 116. ^{{cite news|title=NetBSD 6.0 released with initial Raspberry Pi support|url=http://www.h-online.com/open/news/item/NetBSD-6-0-released-with-initial-Raspberry-Pi-support-1731897.html|accessdate=18 October 2012|newspaper=The H|date=18 October 2012}} 117. ^{{cite web|title=OpenBSD arm64|url=http://www.openbsd.org/arm64.html}} 118. ^{{cite web |title=9pi |url=http://9fans.net/archive/2012/08/129 |publisher=9fans.net mail archive |author=Richard Miller |date=18 August 2012 |deadurl=yes |archiveurl=https://web.archive.org/web/20141012180528/http://9fans.net/archive/2012/08/129 |archivedate=12 October 2014 |df=dmy-all }} 119. ^{{cite web |url=http://www.raspberrypi.org/archives/2665 |title=Wednesday grab bag |at=See the "Plan 9" section |author=Liz |publisher=Raspberry Pi Foundation |date=5 December 2012}} 120. ^{{cite web|title=Inferno OS ported to Raspberry Pi|url=http://lynxline.com/inferno-raspberry-pi-image-beta1/}} 121. ^{{cite news|last=Sauter|first=Marc|title=Internet der Dinger: Windows 10 läuft kostenlos auf dem Raspberry Pi 2|url=http://www.golem.de/news/internet-der-dinge-windows-10-laeuft-kostenlos-auf-dem-raspberry-pi-2-1502-112100.html |trans-title=Internet of Things: Windows 10 runs free on the Raspberry Pi 2 |language=de |accessdate=8 February 2015|date=2 February 2015}} 122. ^1 {{cite web|title=Compiling Haiku for Arm|url=https://www.haiku-os.org/guides/building/compiling-arm|website=haiku-os.org|accessdate=30 April 2015}} 123. ^{{cite web|title=Release Notes for HelenOS 0.6.0|url=http://www.helenos.org/wiki/ReleaseNotes/0.6.0}} 124. ^{{cite web|title=openSUSE on a Raspberry Pi|url= http://en.opensuse.org/HCL:Raspberry_Pi}} 125. ^1 {{cite web|title=SUSE Linux Enterprise Server for Raspberry Pi|url= https://www.suse.com/products/arm/raspberry-pi/}} 126. ^{{cite web|title=Raspberry Pi – Gentoo Wiki|url=https://wiki.gentoo.org/wiki/Raspberry_Pi|accessdate=20 March 2016}} 127. ^1 {{cite web|url=https://ubuntu-pi-flavour-maker.org/blog/ubuntu-pi-flavours-for-raspberry-pi-3/|title=Ubuntu Pi Flavours for Raspberry Pi 3 are released}} 128. ^SlackwareARM for the Raspberry Pi {{webarchive|url=https://web.archive.org/web/20130210050516/http://stanleygarvey.com/Slackberry/index.php |date=10 February 2013 }} 129. ^{{cite web|url=http://www.raspberrypi.org/phpBB3/viewtopic.php?f=2&t=6103 |publisher=raspberrypi.org |title=ArmedSlack working :) |date=18 May 2012}} 130. ^{{cite web|url=http://groups.google.com/group/alt.os.linux.slackware/browse_thread/thread/85f8c15cdab99e2f|title=alt.os.linux.slackware – ARMed Slack running on Raspberry Pi|accessdate=16 September 2014}} 131. ^{{cite web|url=http://www.raspberrypi.org/phpBB3/viewtopic.php?f=56&t=6132&hilit=armedslack|title=raspberrypi.org – ArmedSlack 13.37|accessdate=16 September 2014}} 132. ^{{cite web|url=http://www.slackware.com/install/sysreq.php |title=The Slackware Linux Project: Installation Help |publisher=Slackware.com |accessdate=22 June 2012}} 133. ^{{cite web|url=http://slackbook.org/html/book.html#SHELL|title=Slackware Linux Essentials: The Shell|accessdate=16 September 2014}} 134. ^{{cite web|author=v1.0.2 (en), xiando |url=http://linuxreviews.org/software/desktops/#toc4 |title=Desktops: KDE vs Gnome |publisher=Linux Reviews |accessdate=22 June 2012}} 135. ^{{cite web|title=Sailfish on a Raspberry Pi|url=https://together.jolla.com/question/56308/sailfish-on-a-raspberry-pi/|website=together.jolla.com|publisher=Jolla|accessdate=26 February 2015}} 136. ^{{Cite web|url=https://openwrt.org/toh/hwdata/raspberrypifoundation/raspberrypifoundation_raspberrypi_a|title=Techdata: Raspberry Pi Foundation Raspberry Pi A|last=|first=|date=|website=openwrt.org|publisher=|access-date=2018-04-17}} 137. ^{{Cite web|url=https://openwrt.org/toh/hwdata/raspberrypifoundation/raspberrypifoundation_raspberrypi_b|title=Techdata: Raspberry Pi Foundation Raspberry Pi B|last=|first=|date=|website=openwrt.org|publisher=|access-date=2018-04-17}} 138. ^{{Cite web|url=https://openwrt.org/toh/hwdata/raspberrypifoundation/raspberrypifoundation_raspberrypi_bplus|title=Techdata: Raspberry Pi Foundation Raspberry Pi B+|last=|first=|date=|website=openwrt.org|publisher=|access-date=2018-04-17}} 139. ^{{Cite web|url=https://openwrt.org/toh/hwdata/raspberrypifoundation/raspberrypifoundation_raspberrypi_2_b|title=Techdata: Raspberry Pi Foundation Raspberry Pi 2 B|last=|first=|date=|website=openwrt.org|publisher=|access-date=2018-04-17}} 140. ^{{Cite web|url=https://openwrt.org/toh/hwdata/raspberrypifoundation/raspberrypifoundation_raspberrypi_3_b|title=Techdata: Raspberry Pi Foundation Raspberry Pi 3 B|last=|first=|date=|website=openwrt.org|publisher=|access-date=2018-04-17}} 141. ^{{Cite web|url=https://openwrt.org/toh/hwdata/raspberrypifoundation/raspberrypifoundation_raspberry_pi_zero_w|title=Techdata: Raspberry Pi Foundation Raspberry Pi Zero W|last=|first=|date=|website=openwrt.org|publisher=|access-date=2018-04-17}} 142. ^{{cite news |url=http://www.h-online.com/open/news/item/Raspberry-Pi-warms-up-1341629.html |title=Raspberry Pi warms up |work=The H |date=13 September 2011 |accessdate=12 March 2012 |author=djwm}} 143. ^{{cite web|url=http://www.raspberrypi.org/archives/592 |publisher=raspberrypi.org |title=Libraries, codecs, OSS |date=31 January 2012}} 144. ^{{cite web|url=https://github.com/Hexxeh/rpi-firmware/blob/master/LICENCE.broadcom|title=Hexxeh/rpi-firmware|website=github.com}} 145. ^{{cite web|url=https://github.com/christinaa/rpi-open-firmware |title=christinaa/rpi-open-firmware |website=github.com }} 146. ^{{cite web|last1=Brothers|first1=Ruiz|title=WiFi 3D Printing|url=https://learn.adafruit.com/astroprint-3d-printing/overview|website=Adafruit|accessdate=22 September 2015}} 147. ^{{cite web|url=http://www.softintegration.com/company/press/ch_arm_raspberry_pi_released.html/|title=C/C++ Interpreter Ch 7.5 released for Raspberry Pi, and Pi Zero}} 148. ^{{cite web|url=https://www.theverge.com/2013/11/21/5130394/raspberry-pi-includes-mathematica-wolfram-language-free|title=Raspberry Pi Includes Mathematica Free|date=21 November 2013|work=The Verge|accessdate=16 September 2014}} 149. ^{{cite web|title=Wolfram Language™ & Mathematica free on every Raspberry Pi|url=http://www.wolfram.com/raspberry-pi/}} 150. ^Mathematica and the Wolfram Language on Raspberry Pi, Raspberry Pi Blog, January 2014. 151. ^{{cite web|url=http://www.raspberrypi.org/mathematica-10/|title=Mathematica 10 – now available for your Pi! – Raspberry Pi|accessdate=16 September 2014}} 152. ^[https://reference.wolfram.com/language/guide/RaspberryPi.html Wolfram Language Documentation Center]. 153. ^Wolfram Language™ & Mathematica PILOT RELEASE FOR THE RASPBERRY PI, Wolfram.com. 154. ^{{cite web|url=https://www.wolfram.com/mathematica/new-in-10/highly-automated-machine-learning/|title=Highly Automated Machine Learning: New in Mathematica 10}} 155. ^{{cite web|url=https://www.wolfram.com/mathematica/new-in-10/image-processing/|title=Image Processing: New in Mathematica 10|website=wolfram.com}} 156. ^{{cite web|url=http://pi.minecraft.net/|title=Minecraft: Pi Edition – Minecraft: Pi Edition updates and downloads|accessdate=16 September 2014}} 157. ^{{Cite news|url=https://www.raspberrypi.org/blog/introducing-pixel/|title=Introducing PIXEL – Raspberry Pi|date=28 September 2016|newspaper=Raspberry Pi|access-date=2 February 2017}} 158. ^{{Cite news|url=https://www.realvnc.com/news/realvnc-and-raspberry-pi-announce-new-partnership/|title=RealVNC and Raspberry Pi announce new partnership|access-date=2 February 2017}} 159. ^{{Cite web|url=https://www.realvnc.com/raspberrypi/|title=Raspberry Pi {{!}} RealVNC|website=www.realvnc.com|access-date=2 February 2017}} 160. ^{{Cite news|url=https://www.raspberrypi.org/blog/minecraft-pi-and-more-over-vnc/|title=Minecraft Pi (and more) over VNC – Raspberry Pi|date=9 May 2016|newspaper=Raspberry Pi|access-date=2 February 2017}} 161. ^{{Cite web|url=https://www.realvnc.com/docs/raspberry-pi.html#raspberry-pi-minecraft|title=Docs {{!}} Using VNC 5.x on the Raspberry Pi {{!}} RealVNC|website=www.realvnc.com|access-date=2 February 2017}} 162. ^{{cite news|url=http://www.techworld.com.au/article/527046/entensys_builds_mini_web_filtering_appliance_raspberry_pi|title=Entensys builds mini Web filtering appliance with Raspberry Pi|last=Pearce|first=Rohan|date=20 September 2013|work=Techworld Australia}} 163. ^{{Cite web|url=https://steamcommunity.com/app/353380/discussions/6/2806204039992195182/|title=Steam Link now available on Raspberry Pi :: Steam Link Raspberry Pi|website=steamcommunity.com|language=en|access-date=2018-12-15}} 164. ^{{Cite web|url=https://www.phoronix.com/scan.php?page=news_item&px=Raspberry-Pi-Steam-Link|title=Valve's Steam Link For Raspberry Pi Now Available - Phoronix|website=www.phoronix.com|access-date=2018-12-15}} 165. ^{{cite web |url=http://julialang.org/downloads/ |title=Julia Downloads |accessdate=21 January 2016}} 166. ^{{cite web|url=http://wiki.freepascal.org/Raspberry_Pi |title=Raspberry Pi|date=21 January 2016}} 167. ^{{cite web |url=https://www.raspberrypi.org/blog/a-new-version-of-scratch-for-raspberry-pi-now-with-added-gpio/ |title=A NEW VERSION OF SCRATCH FOR RASPBERRY PI: NOW WITH ADDED GPIO |accessdate=5 August 2016}} 168. ^{{Cite news|url=https://www.zdnet.com/article/google-ai-on-raspberry-pi-now-you-get-official-tensorflow-support/|title=Google AI on Raspberry Pi: Now you get official TensorFlow support {{!}} ZDNet|last=Tung|first=Liam|work=ZDNet|access-date=2018-08-06|language=en}} 169. ^{{cite web |url=http://blogs.computerworlduk.com/open-enterprise/2011/05/as-british-as-raspberry-pi |archive-url=https://archive.is/20130102155751/http://blogs.computerworlduk.com/open-enterprise/2011/05/as-british-as-raspberry-pi |dead-url=yes |archive-date=2 January 2013 |title=As British as Raspberry Pi? |work=Computerworld UK Open Enterprise blog |date=9 May 2011 |accessdate=2 February 2012 |author=Moody Glyn |authorlink=Glyn Moody }} 170. ^{{cite news |url=http://www.itpro.co.uk/639292/raspberry-pi-a-bbc-micro-for-todays-generation |title=Raspberry Pi: A BBC Micro for today's generation |work=ITPRO |date=1 March 2012 |accessdate=15 March 2012 |author=Pritchard, Stephen}} 171. ^{{cite news |url=https://www.telegraph.co.uk/technology/video-games/8931387/Computing-classes-dont-teach-programming-skills.html |title=Computing classes don't teach programming skills |work=The Daily Telegraph |date=3 December 2011 |accessdate=27 February 2012 |author=Stanford, Peter |location=London}} 172. ^{{cite news |url=https://www.bbc.co.uk/news/technology-16424990 |title=Raspberry Pi bids for success with classroom coders |work=BBC News|date=10 January 2012 |accessdate=29 February 2012 |author=Vallance, Chris}} 173. ^{{cite news |url=http://www.cabume.co.uk/the-cluster/how-google-can-really-help-improve-stem-teaching-in-the-uk.html |title=How Google can really help improve STEM teaching in the UK |work=Cabume |date=23 February 2012 |accessdate=28 February 2012 |author=Osborn, George}} 174. ^{{cite news |url=http://www.i-programmer.info/professional-programmer/i-programmer/3419-raspberry-pi-or-programming.html |title=Raspberry Pi or Programming – What shall we teach the children? |work=I Programmer |date=2 December 2011 |accessdate=7 February 2012 |author=Fairhead, Harry}} 175. ^{{cite web |url=http://www.zdnet.com/article/is-raspberry-pi-a-mid-life-crisis/ |title=Is raspberry pi a mid-life crisis? |publisher=ZDNet |date=21 February 2012 |accessdate=24 February 2012 |author=Rockman, Simon |quote=Just because young teens led the way in computing in the 1980s doesn't mean it should, will or can happen again. Those outside the tech age bubble have better things to do.}} 176. ^{{cite web|title=Raspberry Pi – Innovation of the Year|url=http://awards.t3.com/categories/innovation-of-the-year/raspberry-pi|publisher=T3 Gadget Awards|accessdate=9 October 2012}} 177. ^{{cite web|url=http://blog.moorescloud.com/2012/10/05/showtime/ |title=Showtime | Crowdfunding the Light |date=5 October 2012 |accessdate=17 April 2013}} 178. ^{{cite web|title=Latest Raspberry Pi has double the RAM|url=http://www.bcs.org/content/conWebDoc/48492|work=BCS website|publisher=BCS|date=16 October 2012|accessdate=18 October 2012}} 179. ^1 2 3 4 {{cite web |url=http://www.raspberrypi.org/forums/viewtopic.php?f=28&t=99042 |title=Raspberry Pi Forums: Why is the PI2 camera-shy? |author=several authors |work=Raspberry Pi Forums |publisher=Raspberry Pi Foundation |date=7–9 February 2015 |accessdate=9 February 2015}} 180. ^1 2 3 {{cite web |url=http://hackaday.com/2015/02/08/photonic-reset-of-the-raspberry-pi-2/ |title=Photonic Reset of the Raspberry Pi 2 |publisher=Hackaday |date=8 February 2015 |accessdate=8 February 2015 |author=Benchoff, Brian}} 181. ^"Chips that changed the classroom" Ingenia, September 2017 182. ^{{cite web|url=http://www.raeng.org.uk/news/news-releases/2017/june/the-coding-revolution-marches-on-raspberry-pi-wins/|title=The coding revolution marches on: Raspberry Pi wins UK’s top engineering innovation prize|publisher=}} 183. ^{{cite web|url=http://thedigitallifestyle.com/w/index.php/2012/05/06/the-magpi-raspberry-pi-online-magazine-launched/|title=The MagPi – Raspberry Pi online magazine launched|work=The Digital Lifestyle.com|accessdate=16 September 2014}} 184. ^{{cite web|url=http://www.raspberrypi.org/all-change-meet-the-new-magpi/|title=All change – meet the new MagPi|work=Raspberry Pi|accessdate=15 March 2015}} 185. ^{{cite web|title=Raspberry Jam|url=http://raspberrypi.org.uk/jam/|work=Raspberry Pi web|accessdate=15 March 2015}} 186. ^{{cite news |url=https://www.theguardian.com/technology/2012/mar/05/raspberry-pi-demand |title=Raspberry Pi demand running at '700 per second' |work=The Guardian |date=5 March 2012 |accessdate=12 March 2012 |author=Arthur, Charles |location=London}} 187. ^{{cite news|title=Raspberry Pi mini computer sells out after taking 700 orders per second|url=http://www.digitaltrends.com/computing/raspberry-pi-mini-computer-sells-out-after-taking-700-orders-per-second/|accessdate=9 June 2012|newspaper=Digital Trends}} 188. ^{{cite news |url=http://www.raspberrypi.org/welcome-to-our-new-website/ |title=Welcome to our new website |publisher=Raspberry Pi Foundation |date=2 April 2014 |accessdate=15 March 2015 |author=Upton, Liz |location=Cambridge}} 189. ^{{cite news |url=http://www.raspberrypi.org/picademy-free-cpd-for-teachers/ |title=Picademy – free CPD for teachers |publisher=Raspberry Pi Foundation |date=17 March 2014 |accessdate=15 March 2015 |author=Philbin, Carrie Anne |location=Cambridge}} 190. ^{{cite web|url=https://github.com/nasa-jpl/open-source-rover|title=nasa-jpl/open-source-rover|website=GitHub}} 191. ^http://www.ijcsmc.com/docs/papers/May2015/V4I5201599a70.pdf 192. ^{{Cite news|url=http://linuxgizmos.com/automation-controller-taps-raspberry-pi-compute-module/ |title=Automation controller taps Raspberry Pi Compute Module|date=25 June 2014|work=LinuxGizmos.com|access-date=10 March 2017}} 193. ^https://www.suse.com/c/small-server-big-companies-new-raspberry-pi-support-sles-arm/ A small server for big businesses 194. ^{{cite web|title=Meet OTTO – The Hackable GIF Camera|url=https://www.kickstarter.com/projects/1598272670/meet-otto-the-hackable-gif-camera|website=Kickstarter|accessdate=10 November 2016}} 195. ^{{cite web|title=Slice : A media player and more by Five Ninjas|url=https://www.kickstarter.com/projects/fiveninjas/slice-a-media-player-and-more|website=Kickstarter|accessdate=10 November 2016}} 196. ^{{cite web|url=https://www.raspberrypi.org/blog/watch-tim-peake-astro-pi-flight-units-in-space/|title=Watch Tim Peake with the Astro Pi flight units in space!|date=7 March 2016|publisher= Raspberry Pi Foundation}} 197. ^{{cite web |url=http://www.ubergizmo.com/2011/10/build-raspberry-pi-minicomputer/ |title=Build your own prototype Raspberry Pi minicomputer |publisher=ubergizmo |date=24 October 2011 |accessdate=2 November 2011 |author=Wong, George}} 198. ^1 {{cite news |url=https://www.theguardian.com/education/2012/jan/09/raspberry-pi-computer-revolutionise-computing-schools?newsfeed=true |title=Raspberry Pi device will 'reboot computing in schools' |work=The Guardian |date=9 January 2012 |accessdate=20 January 2012 |author=Moorhead, Joanna |location=London}} 199. ^{{cite web|title=Raspberry Pi • View topic – Raspberry Pi as the successor of BBC Micro |url=http://www.raspberrypi.org/phpBB3/viewtopic.php?f=2&t=5118 |date=22 April 2012|accessdate=12 June 2013 |publisher=raspberrypi.org |quote=The Foundation trustees tried very hard to get an agreement to use the BBC Micro name, right up to May 2011. /../ Eben touched on the subject a bit during his speech at the Beeb@30 celebration at the beginning of the month: http://www.raspberrypi.org/archives/970 starting at time index 11:30}} 200. ^{{cite news |url=http://www.businessweekly.co.uk/blog/cambridge-today-tony-quested/13664-raspberry-blown-at-cambridge-software-detractors |title=Raspberry blown at Cambridge software detractors |work=Business Weekly |date=29 February 2012 |accessdate=13 March 2012 |author= Quested, Tony}} 201. ^1 {{cite web |url=https://www.theregister.co.uk/2011/11/28/raspberry_pi/page3.html |title=Psst, kid... Wanna learn how to hack? |work=The Register |date=28 November 2011 |accessdate=24 December 2011 |author=Williams, Chris}} 202. ^{{cite web|url=http://www.tomshardware.com/news/Raspberry-Pi-David-Braben-Ubuntu-9-OLPC-Railroad-Tycoon,12709.html|title=Tiny USB-Sized PC Offers 1080p HDMI Output|accessdate=1 February 2012}} 203. ^1 2 Richard Lawler, 29 February 2012, [https://www.engadget.com/2012/02/29/raspberry-pi-credit-card-sized-linux-pcs-are-on-sale-now-25-mo/ Raspberry Pi credit-card sized Linux PCs are on sale now, $25 Model A gets a RAM bump], Engadget 204. ^{{cite web|url=http://www.raspberrypi.org/archives/3215|title=launch of the model A announced|accessdate=16 September 2014}} 205. ^{{cite web |url=http://swag.raspberrypi.org/collections/pi-zero/products/pi-zero |title=Raspberry Pi Zero, at swag store |archiveurl=https://web.archive.org/web/20160208235627/https://swag.raspberrypi.org/collections/pi-zero/products/pi-zero |archivedate=8 February 2016 |deadurl=yes |df=dmy-all }} 206. ^{{cite web |url=http://www.riscosopen.org/forum/forums/1/topics/632#posts-8012 |title=Yet another potential RISC OS target? |publisher=RISC OS Open |date=23 July 2011 |accessdate=12 March 2012 |author=Upton, Eben}} 207. ^{{cite web |url=http://www.riscoscode.com/Pages/Item0113.html |title=Raspberry Pi To Embrace RISC OS |work=RISCOScode |date=31 October 2011 |accessdate=12 March 2012 |author=Hansen, Martin}} 208. ^{{cite web |url=http://www.riscosopen.org/forum/forums/5/topics/783?page=8#posts-10565 |title=RISC OS on the Raspberry Pi |publisher=RISC OS Open |date=8 February 2012 |accessdate=12 March 2012 |author=Lees, Adrian}} 209. ^{{cite web |url=http://www.raspberrypi.org/phpBB3/viewtopic.php?f=63&t=1942 |title=GPU binary blob question |publisher=Raspberry Pi |date=29 December 2011 |accessdate=12 March 2012 |author=JamesH}} 210. ^{{cite web|url=http://www.geek.com/articles/chips/raspberry-pi-25-pc-goes-into-alpha-production-20110728|title=Raspberry Pi $25 PC goes into alpha production|date=28 July 2011| first= Matthew| last=Humphries|publisher=Geek.com|accessdate=1 August 2011}} 211. ^{{cite web|url=https://www.youtube.com/watch?v=e_mDuJuvZjI&list=UUhmozgJ0cqX8Gx7676ZQ4ig&feature=plcp|title=Raspberry Pi YouTube Channel|accessdate=28 August 2011}} 212. ^{{cite web|url=https://www.youtube.com/watch?v=TgR74Kp6Ws4|title=Full HD video demo at TransferSummit Oxford|accessdate=12 September 2011}} 213. ^{{cite web |url= http://www.osnews.com/story/25276/Raspberry_Pi_To_Embrace_RISC_OS |title=Raspberry Pi To Embrace RISC OS |work=OSNews |date=31 October 2011 |accessdate=1 November 2011 |author=Holwerda, Thom}} 214. ^{{cite news |title=The London show 2011 |work=Archive |date=December 2011 |author=Dewhurst, Christopher |volume=23 |issue=3 |page=3}} 215. ^{{cite web |url=http://www.iconbar.com/articles/Newsround/index1271.html |title=Newsround |work=The Icon Bar |accessdate=17 October 2011 |author=Lee, Jeffrey}} 216. ^{{cite web |url=http://www.raspberrypi.org/archives/2338 |title=RISC OS for Raspberry Pi |accessdate=12 November 2012 |author=eben}} 217. ^{{cite web|url=http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=2868|title=What happened to the beta boards?|accessdate=16 September 2014}} 218. ^{{cite web|url=http://www.raspberrypi.org/archives/389|title=We have PCBs!|accessdate=16 September 2014}} 219. ^{{cite web|url=http://www.raspberrypi.org/archives/470|title=More on the beta boards|accessdate=16 September 2014}} 220. ^{{cite web|url=http://www.raspberrypi.org/archives/431|title=Bringing up a beta board|accessdate=16 September 2014}} 221. ^{{cite web|url=http://www.raspberrypi.org/archives/482 |title=We're auctioning ten beta Raspberry Pi's; |publisher=Raspberrypi.org |date=31 December 2011 |accessdate=6 May 2012}} 222. ^{{cite news |url=https://www.theregister.co.uk/2012/01/03/raspberry_pi_auction/ |title=That Brit-built £22 computer: Yours for just £1,900 or more |work=The Register |date=3 January 2012 |accessdate=10 January 2012 |author=Williams, Chris}} 223. ^1 {{cite web |url=http://www.computinghistory.org.uk/news/16944/ |title=One of the First Raspberry Pi Computers Donated to Museum |publisher=The Centre for Computing History |date=9 January 2012 |accessdate=28 February 2012}} 224. ^{{cite news |url=http://www.techweekeurope.co.uk/news/raspberry-pi-goes-into-production-53652 |title=Raspberry Pi Goes into Production |work=TechWeekEurope UK |date=11 January 2012 |accessdate=11 January 2012 |author=Cheerin, Iris}} 225. ^{{cite web|url=http://www.ebay.co.uk/csc/raspberry_pi/m.html?LH_Complete=1&_ipg=50&_since=15&_sop=13&_rdc=1 |title=eBay list of items sold by Raspberry Pi ''(retrieved 13 January 2012)'' |publisher=Ebay.co.uk |accessdate=6 May 2012}} 226. ^{{cite web|url=http://www.ebay.co.uk/itm/Raspberry-Pi-Model-B-beta-board-01-limited-series-10-/180786868894?pt=LH_DefaultDomain_3&hash=item2a17bcb29e |title=Raspberry Pi Model B beta board – No. 01 of a limited series of 10 |publisher=Ebay.co.uk |date=11 January 2012 |accessdate=6 May 2012}} 227. ^{{cite news |url= http://www.cabume.co.uk/the-cluster/qset-your-alarmsq-raspberry-pi-looks-ready-for-early-wednesday-launch.html |title="Set your alarms!" – Raspberry Pi looks ready for early Wednesday launch |work= Cabume |date=28 February 2012 |accessdate=28 February 2012}} 228. ^{{cite web|url=http://www.linuxnewshere.com/index.php/raspberry-pi-releases-1st-sd-card-image-debian |title=linuxnews showing the first release of Debian Squeeze for Raspberry running on QEMU |publisher=Linuxnewshere.com |accessdate=22 June 2012 |archiveurl=https://web.archive.org/web/20120402160328/http://www.linuxnewshere.com/index.php/raspberry-pi-releases-1st-sd-card-image-debian |archivedate=2 April 2012}} 229. ^1 {{cite web |url=http://www.raspberrypi.org/archives/645 |title=Getting ready for launch: first root filesystem available for download |publisher=Raspberry Pi Foundation |date=17 February 2012 |accessdate=16 July 2013 |archiveurl=https://web.archive.org/web/20120220040851/http://www.raspberrypi.org/archives/645 |archivedate=20 February 2012}} 230. ^{{cite news |url=https://www.bbc.co.uk/news/technology-17190918 |title=The Raspberry Pi £22 computer goes on general sale |work=BBC News|date=29 February 2012 |accessdate=29 February 2012}} 231. ^{{cite news |url=http://www.thehindu.com/sci-tech/technology/article2954870.ece |title=Low-cost mini-PC Raspberry Pi gets heavily booked |work=The Hindu |date=2 March 2012 |accessdate=12 March 2012 |author=Subramanian, Karthik |location=Chennai, India}} 232. ^{{cite news |url=https://arstechnica.com/gadgets/news/2012/02/raspberry-pi-retailers-toppled-by-demand-as-35-linux-computer-launches.ars |title=Raspberry Pi retailers toppled by demand as $35 Linux computer launches |work=Ars Technica |date=29 February 2012 |accessdate=29 February 2012 |author=Paul, Ryan}} 233. ^{{cite news |url=https://www.theguardian.com/technology/2012/mar/04/raspberry-pi-schools-computer-science |title=The Raspberry Pi can help schools get with the programme |work=The Observer |date=4 March 2012 |accessdate=12 March 2012 |author=Naughton, John |location=London}} 234. ^{{cite web| url=http://elinux.org/RPi_Buying_Guide#Q:_Couldn.27t_this_have_been_handled_better.2C_I_couldn.27t_get_on_the_site_to_order_and_they_sold_too_quickly.3F |title=Raspberry Pi Buying Guide |publisher=Elinux.org |accessdate=6 May 2012}} 235. ^1 2 {{cite news |url=http://www.computerweekly.com/blogs/open-source-insider/2012/03/community-strength-blossoms-for-raspberry-pi.html |title=Community strength blossoms for Raspberry Pi |work=Computer Weekly |date=15 March 2012 |accessdate=15 March 2012 |author=Bridgwater, Adrian}} 236. ^{{cite web |url=http://www.raspberrypi.org/archives/781 |title=Manufacturing hiccup |publisher=Raspberry Pi Foundation |date=8 March 2012 |accessdate=19 March 2012 |author=Upton, Liz}} 237. ^{{cite news |url=http://www.ibtimes.co.uk/articles/311738/20120309/raspberry-pi-delayed.htm |title=Raspberry Pi £22 Computer Delayed Due to 'Manufacturing Hiccup' |work=International Business Times |date=9 March 2012 |accessdate=19 March 2012 |author=Gilbert, David}} 238. ^{{cite news |url=http://www.ibtimes.co.uk/articles/313480/20120313/eben-upton-raspberry-pi-founder-interview.htm |title=Interview with Eben Upton – Raspberry Pi Founder |work=International Business Times |date=13 March 2012 |accessdate=19 March 2012 |author=Gilbert, David}} 239. ^{{cite news |url=http://www.tax-news.com/news/Raspberry_Pi_Balks_At_UK_Tax_Regime____53494.html |title=Raspberry Pi Balks at UK Tax Regime |work=Tax-News.com |date=17 January 2012 |accessdate=20 January 2012 |author=Lee, Robert}} 240. ^{{cite news |url=http://www.civilsociety.co.uk/finance/news/content/11318/uk_computing_charity_manufacturing_product_abroad |title=UK computing charity opts to manufacture product abroad |accessdate=20 January 2012 |author=Weakley, Kirsty |publisher=Civil Society Media}} 241. ^{{cite web|url=http://www.raspberrypi.org/archives/805 |title=Raspberry Pi Fedora Remix, our recommended distro, is ready for download! |publisher=Raspberrypi.org |date=8 March 2012 |accessdate=22 June 2012}} 242. ^{{cite news |url=http://www.cbc.ca/news/technology/story/2012/02/23/technology-raspberry-pi-cheap-computer.html |title=$35 computer 'Raspberry Pi' readies for launch |publisher=Canadian Broadcasting Corporation |location=Canada |date=24 February 2012 |accessdate=28 February 2012 |author=Chung, Emily}} 243. ^1 2 {{cite web|url=https://arstechnica.com/information-technology/2013/03/how-two-volunteers-built-the-raspberry-pis-operating-system/|title=How two volunteers built the Raspberry Pi's operating system|last1=Brodkin|first1=Jon|date=6 March 2013|website=Ars Technica|series=Technology Lab / Information Technology|archiveurl=https://web.archive.org/web/20130526080805/http://arstechnica.com/information-technology/2013/03/how-two-volunteers-built-the-raspberry-pis-operating-system/|archivedate=26 May 2013|deadurl=no|accessdate=17 July 2012}} 244. ^1 {{cite web|url=http://wiki.debian.org/ArmHardFloatPort|title=ArmHardFloatPort|date=20 August 2012|website=Debian Wiki|publisher=Debian|archiveurl=https://web.archive.org/web/20130521001958/http://wiki.debian.org/ArmHardFloatPort|archivedate=21 May 2013|deadurl=no|accessdate=17 July 2012}} 245. ^{{cite web|url=http://wiki.debian.org/ArmEabiPort|title=ArmEabiPort|date=28 June 2013|website=Debian Wiki|publisher=Debian|archiveurl=https://web.archive.org/web/20130515012158/http://wiki.debian.org/ArmEabiPort|archivedate=15 May 2013|deadurl=no|accessdate=17 July 2012}} 246. ^{{cite web|url=https://blogs.oracle.com/jtc/entry/is_it_armhf_or_armel|title=Is it armhf or armel?|last1=Connors|first1=Jim|date=16 March 2013|website=Jim Connors' Weblog|publisher=Oracle Blogs|archiveurl=https://web.archive.org/web/20130509055247/https://blogs.oracle.com/jtc/entry/is_it_armhf_or_armel|archivedate=9 May 2013|deadurl=no|accessdate=17 July 2012}} 247. ^{{cite web|url=http://wiki.debian.org/ArmHardFloatPort/VfpComparison|title=ArmHardFloatPort VfpComparison|date=27 April 2011|website=Debian Wiki|publisher=Debian|archiveurl=https://web.archive.org/web/20130201051458/http://wiki.debian.org/ArmHardFloatPort/VfpComparison|archivedate=1 February 2013|deadurl=no|accessdate=17 July 2012}} 248. ^{{cite web |url=http://www.raspberrypi.org/forum/general-discussion/delivery |title=the first reports of forum members reporting they received their Raspberry Pi |publisher=Raspberrypi.org |date=16 April 2012 |accessdate=6 May 2012 |deadurl=yes |archiveurl=https://web.archive.org/web/20120418222146/http://www.raspberrypi.org/forum/general-discussion/delivery |archivedate=18 April 2012 |df=dmy-all }} 249. ^{{cite web|url=https://www.engadget.com/2012/04/16/raspberry-pi-begins-shipping/ |title=Raspberry Pi boards begin shipping today (video) |work=Engadget |accessdate= 6 May 2012}} 250. ^{{cite web|url=http://www.raspberrypi.org/archives/1090 |title=schematic design, applicable for both version A and B of the Raspberry Pi revision 1.0 |publisher=Raspberrypi.org |date=19 April 2012 |accessdate=6 May 2012}} 251. ^{{cite web|title=CAMERA MODULE – FIRST PICTURES!|url=http://www.raspberrypi.org/camera-module-first-pictures/|accessdate=9 August 2014}} 252. ^{{cite web |url= http://www.raspberrypi.org/archives/1298 |title=Add your Raspberry Pi to the Rastrack map |publisher= Raspberrypi.org |date=22 May 2012 |accessdate=14 June 2012}} 253. ^{{cite news|last=Owano|first=Nancy|title=Raspberry Pi gets customized OS called Raspbian|url=http://phys.org/news/2012-07-raspberry-pi-customized-os-raspbian.html|accessdate=5 September 2012|newspaper=PhysOrg|date=18 July 2012}} 254. ^{{cite news|title=Raspberry Pi lifts sale restrictions, open to bulk buyers|url=http://www.electronista.com/articles/12/07/16/rs.farnell.manufacturing.4000.raspberry.pis.per.day/|accessdate=29 August 2012|newspaper=Electronista|publisher=Macintosh News Network|date=16 July 2012}} 255. ^{{cite web |url= http://www.raspberrypi.org/archives/1588 |title=Want to buy more than one Raspberry Pi? Now you can! |publisher= Raspberrypi.org |date=16 July 2012 |accessdate=16 July 2012}} 256. ^{{cite web|url=http://www.raspberrypi.org/phpBB3/viewtopic.php?f=7&t=2886 |publisher=raspberrypi.org |title=Hardware-assisted H.264 video encoding |date=7 February 2012}} 257. ^{{cite web|last=Jurczak |first=Paul |url=http://www.raspberrypi.org/phpBB3/viewtopic.php?f=43&t=6120 |title=Raspberry Pi camera module |publisher=Raspberrypi.org |accessdate=15 October 2012}} 258. ^{{cite web |url=http://raspberrypi.stackexchange.com/questions/3936/what-speed-can-i-expect-from-the-hardware-h264-encoding |title=H.264 Hardware encoding performance}} 259. ^1 {{cite web |title = New video features! MPEG-2 and VC-1 decode, H.264 encode, CEC |publisher = Raspberry Pi Foundation |url = http://www.raspberrypi.org/archives/1839 |accessdate= 26 August 2012}} 260. ^{{cite web |url= http://www.raspberrypi.org/archives/1929 |title=Upcoming board revision |publisher= Raspberrypi.org |date=6 September 2012 |accessdate=5 September 2012}} 261. ^{{cite web|url=http://www.raspberrypi.org/archives/1929 |title=board revision for rev 2.0 |publisher=Raspberrypi.org |date=5 September 2012 |accessdate=15 October 2012}} 262. ^{{cite news|last=Dunn|first=John E|title=Raspberry Pi resurrects UK computer industry with new jobs|url=http://www.computerworlduk.com/news/open-source/3379912/raspberry-pi-resurrests-uk-computer-industry-with-new-jobs/|accessdate=13 September 2012|newspaper=Computerworld UK|date=7 September 2012}} 263. ^{{cite web |url= http://www.raspberrypi.org/archives/1925 |title=Made in the UK! |publisher= Raspberrypi.org |date=6 September 2012 |accessdate=6 September 2012}} 264. ^{{cite web|url=http://www.raspberrypi.org/archives/2180|title=Model B now ships with 512 MB of RAM|publisher=Raspberrypi.org|accessdate=15 October 2012}} 265. ^1 {{cite web|title=Raspberry Pi maker says code for ARM chip is now open source|url=https://arstechnica.com/information-technology/2012/10/all-code-on-raspberry-pis-arm-chip-now-open-source/|work=Ars Technica|accessdate=3 November 2012}} 266. ^{{cite news |url=http://www.zdnet.com/raspberry-pi-delivery-delays-leave-buyers-hungry-and-angry-7000005919/ |title=Raspberry Pi delivery delays leave buyers hungry (and angry) |publisher=ZDNet |date=18 October 2012 |accessdate=18 October 2012 |author=Shead, Sam}} 267. ^{{cite web|url=http://www.raspberrypi.org/archives/2768 |title=Introducing the Pi Store |publisher=Raspberry Pi Foundation |date=17 December 2012}} 268. ^{{cite web |url=http://www.raspberrypi.org/archives/4100 |title=Introducing the New Out of Box Software (NOOBS) |publisher=RPF |date=3 June 2013 |accessdate=4 June 2013 |author=Upton, Liz}} 269. ^{{cite web|url=https://www.bbc.co.uk/news/technology-24435809 |title=Baked in Britain, the millionth Raspberry Pi |publisher=BBC |accessdate=8 October 2013}} 270. ^{{cite web|url=http://www.raspberrypi.org/archives/5265 |title=Two Million! |accessdate=18 November 2013}} 271. ^1 {{cite web |last1=Brodkin |first1=Jon |title=Raspberry Pi marks 2nd birthday with plan for open source graphics driver |url=https://arstechnica.com/information-technology/2014/02/raspberry-pi-marks-2nd-birthday-with-plan-for-open-source-graphics-driver/ |publisher=Ars Technica |accessdate=27 July 2014 |date=28 February 2014}} 272. ^1 {{cite web |last1=Upton |first1=Eben |title=A birthday present from Broadcom |url=http://www.raspberrypi.org/a-birthday-present-from-broadcom/ |publisher=Raspberry Pi Foundation |accessdate=27 July 2014 |date=28 February 2014}} 273. ^{{cite web|url=http://www.raspberrypi.org/raspberry-pi-at-buckingham-palace-3-million-sold/ |title=RASPBERRY PI AT BUCKINGHAM PALACE, 3 MILLION SOLD |accessdate=22 June 2014}} 274. ^{{cite web|url=http://www.raspberrypi.org/raspberry-pi-2-on-sale |title=Raspberry Pi 2 on sale now at $35 Raspberry Pi |accessdate=3 February 2015}} 275. ^{{cite web|url=https://www.raspberrypi.org/price-cut-raspberry-pi-model-b-now-only-25/|title=Price cut! Raspberry Pi Model B+ now only $25|date=14 May 2015|accessdate=19 May 2015}} 276. ^{{cite web|url=http://www.itpro.co.uk/desktop-hardware/24587/raspberry-pi-slashes-price-after-rival-launches-on-kickstarter|title=Raspberry Pi slashes price after rival launches on Kickstarter|date=18 May 2015|accessdate=19 May 2015}} 277. ^{{Cite web| url = https://www.raspberrypi.org/blog/raspberry-pi-3-on-sale/| title= Raspberry Pi 3 available| last = Upton| first= Eben| date = 29 February 2016| publisher = Raspberry Pi Foundation| access-date= 1 March 2016}} 278. ^{{cite web|url=https://www.theguardian.com/technology/2016/feb/29/raspberry-pi-3-launch-computer-uk-bestselling|title=Raspberry Pi 3: the credit card-sized 1.2 GHz PC that costs $35|author=Alex Hern|work=The Guardian}} 279. ^{{cite web|url=https://www.raspberrypi.org/blog/raspberry-pi-3-on-sale/|archiveurl=https://web.archive.org/web/20160229072534/https://www.raspberrypi.org/blog/raspberry-pi-3-on-sale/|title=Raspberry Pi 3 on sale now at $35|archivedate=29 February 2016|work=Raspberry Pi}} 280. ^1 2 {{Cite web|url=https://www.raspberrypi.org/blog/ten-millionth-raspberry-pi-new-kit/|title=Ten millionth Raspberry Pi, and a new kit – Raspberry Pi|date=8 September 2016|quote=we've beaten our wildest dreams by three orders of magnitude|access-date=9 September 2016}} 281. ^{{cite web|title=New 8-megapixel camera board on sale at $25 |date=25 April 2016 |accessdate=6 May 2016 |url=https://www.raspberrypi.org/blog/new-8-megapixel-camera-board-sale-25/ |quote=both visible-light and infrared cameras based on the Sony IMX219 8-megapixel sensor, at the same low price of $25. They're available today from our partners RS Components and element14}} 282. ^{{Cite web| url = https://www.nec-display-solutions.com/p/hq/en/news/dp/Products/Shared/News/2016/PressReleases/Company/RaspberryPi/RaspberryPi.xhtml| title= NEC Display Solutions announces collaboration with Raspberry Pi| date = 10 October 2016| publisher = NEC| access-date= 10 November 2016}} 283. ^{{Cite web| url = https://www.raspberrypi.org/blog/compute-module-nec-display-near-you/| title= The Compute Module – now in an NEC display near you| last = Upton| first= Eben| date = 14 October 2016| publisher = Raspberry Pi Foundation| access-date= 10 November 2016}} 284. ^1 {{Citation| url = https://www.raspberrypi.org/magpi/issues/53/| title= The Mag Pi Magazine issue 53, Page 10| quote= On 25 November, it was confirmed that total sales of the Raspberry Pi have now topped 11 million.| publisher = Raspberry Pi Foundation}} 285. ^1 {{Citation| url = https://www.raspberrypi.org/blog/compute-module-3-launch/| title = Compute Module 3 Launch| publisher = Raspberry Pi Foundation}} 286. ^{{cite web|url=https://arstechnica.com/information-technology/2017/02/new-10-raspberry-pi-zero-comes-with-wi-fi-and-bluetooth/|title=New $10 Raspberry Pi Zero comes with Wi-Fi and Bluetooth|website=arstechnica.com}} 287. ^{{cite web|url=https://www.raspberrypi.org/blog/raspberry-pi-zero-w-joins-family/|title=New product! Raspberry Pi Zero W joins the family |date=28 February 2017|publisher=Raspberry Pi Foundation}} 288. ^{{cite news |date= 2018-03-14|title=Raspberry PI 3B+ on sale now |url=https://www.raspberrypi.org/blog/raspberry-pi-3-model-bplus-sale-now-35// |access-date=2018-03-21 }} 289. ^{{Cite news|url=https://www.raspberrypi.org/blog/new-product-raspberry-pi-3-model-a/|title=New product: Raspberry Pi 3 Model A+ on sale now at $25 - Raspberry Pi|date=2018-11-15|work=Raspberry Pi|access-date=2018-11-15|language=en-GB}} Further reading
External links{{Prone to spam|date=October 2012}}{{Z148}}{{Commons category}}
10 : 2012 establishments in the United Kingdom|ARM architecture|British brands|British computers|British inventions|Computer science education in the United Kingdom|Educational hardware|Linux-based devices|Products introduced in 2012|Single-board computers |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。