Pascaline was the First Practical Adding Machine

The first practical adding machine, the Pascaline was invented by Blaise Pascal, a French philosopher, mathematician, and scientist in 1642. Inspired by Hero of Alexandria’s design that computed the distance a carriage travelled. Numbers were entered by turning 10-tooth dial wheels linked to a gear train while up to eight numbers addition and subtraction could be performed. The Pascaline performed faster and more accurately than manual calculations, yet only Pascal knew how to repair the device making it more costly than previous calculators. The basic principle is still in used with water meters and odometers. The arithmometer was the first calculator for sale invented by Frenchman, Charles Xavier Thomas de Colmar in 1820.

      1642, 1820
      Blaise Pascal
      Philosopher, Mathematician, Scientist

Additional Information:

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