Also known as the IBM Automatic Sequence Controlled Calculator, or ASCC, the pioneering computer was notable for producing reliable results and its ability to run 24/7.
Harvard electrical engineer Howard Aiken first dreamt up a large-scale calculator in 1937. He knew he needed a corporate partner and first courted Monroe Calculator Company, which turned him down. Aiken went back to the drawing board and came up with a proposal that convinced IBM, whose big product at the time was a punch-card processor. A big plus in the proposal was that it used so many existing IBM components in a new way.