According to me as much as I know being in 7th Class, It would be Eniac.
ENIAC was a "one off" military computer custom designed for the US Army, no more were made and none were ever available commercially. The first US commercially available computer was made by Remington Rand starting in 1951, it was UNIVAC I.
The name of the first commercially available electronic digital computer is UNIVAC.
Remington Rand made the first commercial computer called the UNIVAC in 1951. There first customer was the U.S. Census Bureau. It had over 50 thousand vacuum tubes (transistors were not yet invented).
Electronic Numerical Integrator And Computer
Actually any commercial computer by anybody that could be named was before IBM. Watson Sr. saw little future in electronic computing and did not want to build fast machines that would obsolete their Electromechanical Unit Record line. It took Watson Jr. and the Korean War to push IBM into making their first "commercial" compuuter: the Scientific IBM 701. Their first two true commercial computers: The IBM 650 and IBM 702 were introduced a year or two after the IBM 701.
The first commercial computer in the UK (the Eliot 152) was delivered in 1950.
designed ENIAC, the first general purpose electronic digital computer, as well as EDVAC, BINAC and UNIVAC I, the first commercial computer made in the United States.
Electronic Numerical Integrator And Computer, was the first general-purpose electronic computer.
Electronic computer is may faster and smaller than the first developed computer. Electronic computers today uses small electronic devices and integrated circuits. Long time ago they use vacuum tubes which are huge.
Charles Babbage invented the first electronic computer
what could the first ever computer actually do?
The first electronic digital computer was.
The answer depends on how you define a computer. Konrad Zuse built the first electronic computer at Berlin, Germany The first electronic computer in the US was built at Ames, Iowa by John Atanasoff.