Important Events in the History of Computers By Dru44 Jan 1, 1934 IBM 405 Alphabetical Accounting Machine introduced Jan 1, 1936 Alan Turing invented the principle of the modern computer Jan 1, 1938 Zuse Z1 built by Konrad Zuse Jan 1, 1939 Hewlett Packard Founded May 12, 1941 Zuse Z3 machine completed Jan 1, 1942 The Atanasoff-Berry Computer is completed Dec 1, 1943 The first COLOSSUS code-cracking machine, became operational Jan 1, 1950 Zuse sold first Z4 computer Jul 1, 1956 First keyboard used to input data Sep 5, 1956 IBM brings out the Magnetic Disk Memory Sep 12, 1958 Jack Kilby created the first integrated circuit Jan 1, 1962 The first commercial Modem manufactured Sep 5, 1963 Douglas Engelbart Invents the Mouse Jan 1, 1965 Moore's Law coined Mar 5, 1971 Intel Launches the First Microprocessor - The 4004 Sep 5, 1971 First email sent Jan 1, 1972 The Magnavox Odyssey, the first video game console, is released Sep 15, 1975 Microsoft Founded Nov 2, 1981 The first ‘portable computer is launched Sep 5, 1983 Microsoft Introduced 2-button Mouse Nov 20, 1985 Microsoft Windows Launched Sep 5, 1992 Internet freed from Government control