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Message: [QUOTE="Tim Rentsch, post: 2430737"] In the US, the first digital electronic computer wasn't the ENIAC but the Atanasoff-Berry Computer, built at Iowa State University by John Atanasoff and Cliff Berry. They had a working prototype in 1939. John Mauchly visited John Atanasoff at ISU in 1941, and it's clear that ideas from Atanasoff's work influenced the design of the ENIAC. As with other early computer efforts (Colossus, Zuse's Z1 and Z2, Harvard Mark I, the Bell Labs machines built by George Stibitz), the "ABC" was a special purpose rather than Turing-complete computer. [/QUOTE]