ENIAC: 1946: The first computer to run without mechanical parts to slow it down

ENIAC - Wikipedia

https://en.wikipedia.org/wiki/ENIAC

Although ENIAC was designed and primarily used to calculate artillery firing tables for the United States Army's Ballistic Research Laboratory, its first programs included a study of the feasibility of the thermonuclear weapon.

‎Kathleen Antonelli · ‎Betty Holberton · ‎Jean Bartik · ‎Frances Spence

ENIAC - CHM Revolution - Computer History Museum

www.computerhistory.org/revolution/birth-of-the-computer/4/78

ENIAC programmers Frances Bilas (later Frances Spence) and Betty Jean Jennings (later Jean Bartik) stand at its main control panels. ... In 1942, physicist John Mauchly proposed an all-electronic calculating machine. ... The result was ENIAC (Electronic Numerical Integrator And Computer ...

Programming the ENIAC - Columbia University

www.columbia.edu/cu/computinghistory/eniac.html

Built in 1943-45 at the Moore School of the University of Pennsylvania for the War effort by John Mauchly and J. Presper Eckert (no relation to Columbia University's Wallace Eckert) but not delivered to the Army until just after the end of the war, the Electronic Numerical Integrator And Computer (ENIAC) was the first ...

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Why was the Eniac computer built?

The U.S. Army, meanwhile, needed to calculate complex wartime ballistics tables. Proposal met patron. The result was ENIAC (Electronic Numerical Integrator And Computer), built between 1943 and 1945—the first large-scale computer to run at electronic speed without being slowed by any mechanical parts.