William Oughtred
William Oughtred was an English mathematician and Anglican clergyman. After John Napier invented logarithms and Edmund Gunter created the logarithmic scales upon which slide rules are based, Oughtred was the first to use two such scales sliding by one another to perform direct multiplication and division. He is credited with inventing the slide rule in about 1622. He also introduced the "×" symbol for multiplication and the abbreviations "sin" and "cos" for the sine and cosine functions.
From *.wikipedia.org,
General Info
.
Male
Date of Birth
March 5th, 1574
Age
452
Birth Place
United Kingdom, England
Date of Death
June 30th, 1660
Died Aged
86
Star Sign
Pisces
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