| 词条 | Xerox Sigma 9 |
| 释义 |
| name = Xerox Sigma 9 | title = | aka = | logo = | image = File:LCM - Xerox Sigma 9 - 01.jpg | caption = Living Computer Museum - Xerox Sigma 9 | developer = Xerox | manufacturer = | family = Xerox Sigma | type = | generation = | releasedate = 1970 | lifespan = | price = | discontinued = | unitssold = | unitsshipped = | media = | os = | power = | soc = | cpu = | memory = | storage = | memory card = | display = | graphics = | sound = | input = | controllers = | camera = | touchpad = | connectivity = | platform = | service = | dimensions = | weight = | topgame = | compatibility= | predecessor = | successor = | related = | website = }} The Xerox Sigma 9, also known as the XDS Sigma 9, was a high-speed, general purpose computer. Xerox first became interested in office automation through computers in 1969 and purchased Scientific Data Systems or SDS. They then renamed the division Xerox Data Systems or XDS; they saw limited success, and the division was ultimately sold to Honeywell at a significant loss.[1] The Sigma 9 was announced in 1970 and the first delivery was made in 1971.[2] There were 3 models built, the Sigma 9, the Sigma 9 Model 2 and the Sigma 9 Model 3. The original was the most powerful and was universally applicable to all data processing applications at the time. The Model 2 was able to process in multi-programmed batch, remote batch, conversational time-sharing, real-time, and transaction processing modes. The Model 3 was designed for the scientific real-time community. Features of the Basic SystemsAll models featured a CPU with at least a floating-point arithmetic unit, Memory map with access protection, Memory write protection, Two real-time clocks, a Power fail-safe, an External interface, Ten internal interrupt levels. Also a Multiplexor input/output processor (MIOP) featuring Channel A with eight sub-channels.[3] Listed below are the individual specifications Sigma 9
Model 2
Model 3
Interesting facts
References1. ^{{cite web|title=Exhibits - Living Computer Museum|url=http://www.livingcomputermuseum.org/The-Collection/Exhibit-Hall.aspx|website=www.livingcomputermuseum.org|accessdate=12 July 2016}} 2. ^{{cite web|title=Sigma9 Sales Guide|url=http://www.mirrorservice.org/sites/www.bitsavers.org/pdf/sds/sigma/Sigma_6_9_Sales_Guide_Feb72.pdf|accessdate=12 July 2016}} 3. ^{{cite book|title=Xerox Sigma 9 Reference Manual|date=June 1972|publisher=Xerox|location=El Segundo, California}} 4. ^{{cite journal|last1=Enterprise|first1=I. D. G.|title=Computerworld|date=16 June 1980|volume=14|issue=24|url=https://books.google.com/books?id=WYDdQcbrF5wC&pg=RA1-PA61&lpg=RA1-PA61&dq=xerox+sigma+9&source=bl&ots=B1GXZIuSbE&sig=n07aRbtiy7GMrknSWvDem03qw4w&hl=en&sa=X&ved=0ahUKEwi7gYCoq4_PAhUT3GMKHR9lA3E4ChDoAQg8MAU#v=onepage&q=xerox%20sigma%209&f=false|publisher=IDG Enterprise|language=en}} 5. ^{{cite journal|last1=Enterprise|first1=I. D. G.|title=Computerworld|date=25 June 1975|volume=9|issue=26|url=https://books.google.com/books?id=TgGty5HMPj0C&pg=PA21&lpg=PA21&dq=xerox+sigma+9&source=bl&ots=9huaXSwFmi&sig=rlOhcvm6nEdxEY9ksvvVPRlAd-E&hl=en&sa=X&ved=0ahUKEwi7gYCoq4_PAhUT3GMKHR9lA3E4ChDoAQg-MAY#v=onepage&q=xerox%20sigma%209&f=false|publisher=IDG Enterprise|language=en}} 6. ^{{cite journal|last1=Enterprise|first1=I. D. G.|title=Computerworld|date=17 May 1976|volume=10|issue=20|url=https://books.google.com/books?id=uFhUP0BV0vwC&pg=PA43&lpg=PA43&dq=xerox+sigma+9&source=bl&ots=NN-rdEopLg&sig=IJGeV172b1TuEkdFBuZ6si4pxnQ&hl=en&sa=X&ved=0ahUKEwi7gYCoq4_PAhUT3GMKHR9lA3E4ChDoAQhHMAk#v=onepage&q=xerox%20sigma%209&f=false|publisher=IDG Enterprise|language=en}} 7. ^{{cite book|last1=Arms|first1=Caroline|title=Campus Strategies for Libraries and Electronic Information|date=2015|publisher=Digital Press|isbn=9781483294483}} 8. ^{{cite book|title=The Use of Small Computers in ARL Libraries|date=1981|publisher=Association of Research Libraries}} Further reading
3 : Mainframe computers|Computer-related introductions in 1971|Xerox 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。