Computing HIstory By Sonicdrummer45 Period: Jun 19, 1623 to Aug 19, 1662 Blaise Pascal Period: Jan 1, 1642 to Jan 1, 1742 The Pascaline I don't know what date and what year it ended Period: Jul 1, 1646 to Nov 14, 1716 Gottfied Wilheim von Leibniz Period: Dec 26, 1792 to Oct 18, 1871 Charles Babage Period: Dec 10, 1815 to Nov 27, 1852 Augusta Ada Lovelace Period: Jan 1, 1833 to Jan 1, 1933 Difference Engine Period: Feb 29, 1860 to Nov 17, 1929 Herman Hollerith Period: Jun 23, 1860 to Jun 7, 1929 Alan Turing Period: Feb 22, 1905 to Oct 28, 1998 Tommy Flowers Period: Aug 11, 1950 to Feb 13, 2013 Steve Wozniak Period: Jun 8, 1955 to Feb 13, 2013 Tim Bernes- Lee Period: Oct 23, 1955 to Feb 13, 2013 Bill Gates