8 Amazing Mechanical Calculators Before Modern Computers

Before there are graphing calculators, spreadsheets and computer algebra systems, mathematicians and inventors searched for solutions to ease the burden of calculation. Today we celebrate human achievement in creating these calculators. Below are the 8 mechanical calculators before modern computers were invented. 1. Abacus (ca. 2700 BC) Although abacus is not mechanical, it was one […]
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