The first computer was used for a variety of purposes but primarily for mathematical and scientific calculations. ENIAC, the first electronic computer, was developed by John Atanasoff and Clifford Berry in the early 1940s. It was used by the U.S. military for ballistic trajectory calculations during World War II. After the war, ENIAC was used by the Atomic Energy Commission for nuclear weapons research.

When was first computer used?

The first computer was used in 1822 by Charles Babbage.

What was the first computer who invented it and when?

The first computer was the ENIAC, invented in 1946 by John …