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The Evolution of Computers

1.First Generation (1939-1954) - vacuum tube

* 1937 - John V. Atanasoff designed the first digital electronic computer
* 1939 - Atanasoff and Clifford Berry demonstrate in Nov. the ABC prototype
* 1941 - Konrad Zuse in Germany developed in secret the Z3
* 1943 - In Britain, the Colossus was designed in secret at Bletchley Park to decode German messages
* 1944 - Howard Aiken developed the Harvard Mark I mechanical computer for the Navy
* 1945 - John W. Mauchly and J. Presper Eckert built ENIAC at U of PA for the U.S. Army
* 1946 - Mauchly and Eckert start Electronic Control Co., received grant from National Bureau of Standards to build a ENIAC-type computer with magnetic tape input/output, renamed UNIVAC in 1947 but run out of money, formed in Dec. 1947 the new company Eckert-Mauchly Computer Corporation (EMCC).
* 1948 - Howard Aiken developed the Harvard Mark III electronic computer with 5000 tubes
* 1948 -......

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Approximate Word Count: 1819
Approximate Pages: 8 (250 words per double-spaced page)

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