“Emily C. Duncan”的意思、由来-开放百科全书

词条

Emily C. Duncan

释义

References

Emily C. Duncan received two patents in 1903 and 1904 for banking-related calculators.^[1] Duncan was born in 1849 in Coral, Illinois as Emily Cornelius Forbes and later resided in Centralia, Wisconsin (which later became Wisconsin Rapids) and Jennings, Louisiana. She invented new banking calculators and was mentioned in Inventive Age magazine in February 1905. Duncan was recognized as one of many women who worked in the age of technology before the actual computer.^[2] She was married to inventor James Eugene Duncan and although he was believed to be the only inventor in the family written accounts from her granddaughter indicated she assisted her husband with numerous inventions.^[3]

Based on her written statement provided in the original patent application she stated that her goal was to provide a “simple and readily understood structure with which computations ordinarily requiring considerable time and care may be accurately and quickly made”.^[4] The other objective of her invention was “to provide a device of the above character in which parts may be readily substituted, so that computations of different kinds may be made”.^[4]

The first apparatus was intended for computing interest in 1 at six, seven, or eight per cent. The calculator was first designed to easily be used by any mathematician, but her original patent provided detailed illustration of two apparatuses with details explaining how the calculator was to be operated. The invention was designed more specifically for computing in hundreds^[4]

In 1904, she received another patent for an invention relating to improvements in calculators. Her objective of this invention was to improve the construction of time-calculators and to provide a more durable device designed primarily for determining the number of days between any two dates within a year with absolute accuracy.^[5]

References

1. ^{{cite book|last1=Kirk|first1=Mary|title=Gender and Information Technology: Moving Beyond Access to Co-Create Global Partnership|date=2008|publisher=IGI Global|page=148|isbn= 9781599047881}}
2. ^{{cite book|last1=Stanley|first1=Autumn|title=Mothers and Daughters of Invention: Notes for a Revised History of Technology|date=1993|publisher=The Scarecrow Press|pages=436–438}}
3. ^{{cite book|last1=Stanley|first1=Autumn|title=Mothers and Daughters of Invention: Notes for a Revised History of Technology|date=1993|publisher=The Scarecrow Press|pages=414}}
4. ^¹²{{cite web|url=http://www.google.com/patents/US745167|title=Calculator: US 745167 A | date = November 24, 1903 | accessdate = December 27, 2014}}
5. ^{{cite web|url=http://www.google.com/patents/US749851|title=Calculator: US 749851 A | date = January 19, 1904 | accessdate = December 27, 2014}}

3 : Women inventors|1849 births|Year of death missing

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。