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Early electronic digital computer built in the U.S. in 1945 by J. Presper Eckert and John W. Mauchly. The massive ENIAC, which weighed 30 tons and filled an entire room, used some 18,000 vacuum tubes, 70,000 resistors, and 10,000 capacitors. In December 1945 it solved its first problem, calculations for the hydrogen bomb. After its official unveiling in 1946, it was used to prepare artillery-shell trajectory tables and perform other military and scientific calculations.
Variants of ENIAC
ENIAC in full Electronic Numerical Integrator and Computer
This entry comes from Encyclopædia Britannica Concise. For the full entry on ENIAC , visit Britannica.com.
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