When was the ENIAC invented?
A proposal for the machine was written in late 1942 and submitted to the Army for calculating Artillery Firing Tables. ENIAC was built between 1943 and 1945. Its first real program, simulation of Edward Teller's Classical Super fusion bomb, was run in December 1945 and January 1946, used a million punched cards. The simulation showed this fusion bomb design to be not workable. ENIAC was publicly announced and demonstrated in February 1946 (prior to this it was a Top Secret project).
ENIAC was designed for one purpose and one purpose only. The human computers at the Army's BRL at Aberdeen were totally overwhelmed computing firing tables for all the new models of Artillery and new conditions in which they operated in during WW2. ENIAC was supposed to do these calculations faster. Work began in 1942 but it was not completed until late 1945, so it was not able to contribute to the war. Its first big…
No. Mechanical computing devices with any similarity with today's computers and the concepts behind them originated from the UK. The first electrical computing device originated in Germany. Then the British created the Colossus to break German codes during WWII, and after that, the ENIAC was created in the US. The ENIAC was faster and more flexible than the Colossus.