Science & technology

ENIAC

15 February 1946

ENIAC, the Electronic Numerical Integrator and Computer, was built at the University of Pennsylvania by John Mauchly and J. Presper Eckert and publicly unveiled in 1946. It was commissioned by the United States Army to calculate artillery firing tables, using nearly 18,000 vacuum tubes. It was programmed by rewiring cables and setting switches, work done by a group of women mathematicians including Kay McNulty, Betty Jennings and Betty Snyder. It was among the first electronic general-purpose computers, and it also performed calculations for the hydrogen bomb programme. ENIAC was far faster than the mechanical machines before it and was in use until the middle of the 1950s.

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This moment belongs to the Contemporary world (1945 CE to today), the world since 1945. You can also browse everything in the 20th century.