jan 1, 1947 - LARGE ELECTRONIC COMPUTER

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Howard H. Aiken (1900-1973), a Harvard engineer working with three engineers of IBM, constructed a large automatic digital computer based on IBM electromechanical parts in 1937. This machine is called Harward Mark-1. It was also called IBM ASCC (Automatic Sequence Controlled Calculator).It consumes 3 to 5 seconds in multiplication, 12 seconds in division but fully automatic without intervention of human. The modified version of Mark-1 is called mark-II come in existence in 1947.

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