The Pascaline, the first mechanical adding machine, was invented in 1642 by
- A.Gottfried Leibniz
- B.John Napier
- C.Blaise Pascal
- D.Joseph Marie Jacquard
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The French mathematician Blaise Pascal built the Pascaline in 1642 to help his father with tax calculations; it worked with toothed wheels and could add and subtract, and the programming language Pascal is named in his honour.
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