George Stibitz creates electrical circuit to apply Boolean algebra. 1939 IBM engineers and Howard Aiken of Harvard start on the Mark I computer. 1946 Von Neumann, Goldstine, and Burks publish paper on computer concepts. I built at University of Illinois employing the Von Neumann design. I machine installed at U.S. Census Bureau.
Computer beats human player in chess game.
1959 Jack St. Clair Kilby of Texas Instruments invents integrated circuits. 1971 Engineers at Intel invent the microprocessor. 1974 First personal computers introduced. 1974 First time that a bar code scanned groceries at a supermarket. 1976 Cray Research sells first supercomputer.