History of Computers By Tattat725 Jan 1, 1623 First known calculator By: Wilhem shickard Jan 1, 1820 First mass produced calculator By: Thomas de Colmar Jan 1, 1829 First tipewriter Patteted by: William Auston Burt Jan 1, 1892 First adding machine with a printer By: Burroughs Jan 1, 1899 Magnetic recording is invented Jan 1, 1906 The vacume toob is invented By: William de Frost Jan 1, 1935 The electric typewriter is invented By: IBM Jan 1, 1938 The Z1 Calculating machine is invented By: Konrad Zuse Jan 1, 1945 The Z4 is finished By: Konread Zuse Jan 1, 1951 Junction translator By: William Shockley