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Wilhelm Schickard

Wilhelm Schickard
Wilhelm Schickard, German astronomer and mathematician (d. 1635)

Wilhelm Schickard was a German professor of Hebrew and astronomy who became famous in the second part of the 20th century after Franz Hammer, a biographer of Johannes Kepler, claimed that the drawings of a calculating clock, predating the public release of Pascal's calculator by twenty years, had been discovered in two unknown letters written by Schickard to Johannes Kepler in 1623 and 1624.

22 April 1592

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Born on the same birth day (22 April): Aaron Spelling • Carl Lindner Jr. • Dee Strange-Gordon • Doug Jarrett • Eric Fenby • Gopalkrishna Gandhi • James Sullivan (governor) • Jan de Hartog • Jeffrey Dean Morgan • John Waters • Mickey Morandini • Nicholas Stern, Baron Stern of Brentford • Ray Guy (humorist) • Ronald Hynd • Ryan Stiles • Spyros Markezinis • Vernon Johns • Yvette Chauviré

Born in the same month (April 1592): Francesco Maria Brancaccio • John Eliot (statesman)