An adding machine is a mechanical or electromechanical calculator which could perform addition and subtraction.
The adding machine is actually a calculator. but in the mid 1642's it was called an adding machine. it was used to help with mathimatics
The first adding calculator machine was invented by Blaise Pascal.
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It was Blaise Pascal that invented the adding machine in 1642. He invented this machine to help ease the burdens of his father who worked as a clerk at the time.
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Leonardo da Vinci. Experts mean the sketch does not really show an adding machine, but a ratio machine.
What is the value of a Victor Adding Machine, Model 7 57 54, Serial # 3425-389
a mechanical adding machine.
In 1642 Blaise Pascal invented the pascaline, the first adding machine using gears, to help his father calculate taxes. William Seward Burroughs invented a different kind of adding machine in 1885.
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