• Born date: 1574-03-05
  • Born in: England
  • Death date: 1660-06-30
  • Death in: England
William Oughtred

Rev. William Oughtred (5 March 1574 – 30 June 1660) was an English mathematician and Anglican minister.After John Napier invented logarithms, and Edmund Gunter created the logarithmic scales (lines, or rules) upon which slide rules are based, it was Oughtred who first used two such scales sliding by one another to perform direct multiplication and division; and he is credited as the inventor of the slide rule in 1622.

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