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Computer History
Timeline
Inventor | Invention |
---|---|
Blaise Pascal 1623-1662 | Invented a mechanical calculating device called Pascaline. 1642 Device performs only addition. Device never worked properly. |
Gottfried Wilhelm von Leibniz 1646-1716 | Invented the stepped Reckoner in 1670. Device was supposed to add, multiply, subtract and divide but malfunctioned. |
Charles Babbage 1792-1871 | Analytical Engine-calculating machine that used punched cards to store information in 1842. Chief Collaborator was Ada Byron 1815-1852. |
Herman Hollerith 1860-1929 | Invented the tabulating machine in 1890. Used electricity instead of gears to perform calculations. |