nBetween 1937 and
1939, while teaching at Iowa State College,
American physicist John Vincent Atanasoff built a prototype computing device called the Atanasoff-Berry Computer, or ABC, with the help of his assistant,
Clifford Berry. Atanasoff
developed the concepts that were later used in the design of the first electronic digital
computer, the Electronic Numerical
Integrator and Computer (ENIAC).
Atanasoff’s device was the first computer to separate data processing from memory.