Difference+Analyzer

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=Vacuum Tube Generation= =Invention: Differential Analyzer=
 * Date: It was started in 1928 and finished in 1930**


 * Description: It was a mechanical analog computer that used electricity only to turn the shafts which turned the cranks which tick away clumsily to solve differential equations also very large. It was said to be the most accurate of it's time.**

http://www.computermuseum.li/Testpage/Differential-Analyzer-1931.htm
 * Bibliography:**



=**Inventor: Vannevar bush**=
 * Birth Date - Death Date: birth march 11, 1890 Died June 28,1974**
 * Birth Place: Massachusetts**


 * Brief biography: He did very well in school. He especially did well in math. He went to Tufts college to study engineering. He was attempting to reinvent Charles Babbage's Difference engine when he made the differential analyzer.**

__Digital Humanities__. Retrieved 14 Feb. 2013. http://www.ibiblio.org/pioneers/bush.html
 * Bibliography:**