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When was Pascaline invented?

  • A.1617
  • B.1620
  • C.1642
  • D.1837

Answer: C

Correct answer: 1642

Blaise Pascal built the Pascaline in 1642, at the age of nineteen, to help his father with tax accounts. Geared wheels performed addition and subtraction with automatic carrying - the first calculating machine to handle the carry mechanically.

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