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nov 1, 1939 - John Vincent Atanasoff and graduate student Clifford Berry of Iowa State College (now the Iowa State University), Ames, Iowa, completed a prototype 16-bit adder. This was the first machine to calculate using vacuum tubes.
Added to timeline:
Computer Industry Timeline Since 1940
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Disguise_AU
18 Nov 2017
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Date:
nov 1, 1939
Now
~ 86 years ago
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