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Adding Machine History

  • The first inventor "1642. Inventor : Blaise Pascal (France) (1623-62)".
  • Earliest commercial machine invented by William Burroughs (U.S.) in St. Louis, Missouri in 1885.
  • An adding machine was a class of mechanical calculator, usually specialized for bookkeeping calculations.
  • In the United States, the earliest adding machines were usually built to read in dollars and cents.
  • Adding machines were ubiquitous office equipment until they were phased out in favor of calculators in the 1970s.
  • The older adding machines were rarely seen in American office settings by the year 2000.
  • Blaise Pascal and Wilhelm Schickard were the two original inventors of the mechanical calculator in 1642

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