The history of the Calculator | Greatsoft CRM for accountants
THE HISTORY OF THE CALCULATOR In the very beginning, of course was the abacus, a sort of hand operated mechanical calculator using beads on rods, first used by Sumerians and Egyptians around 2000 BC. The principle was simple, a frame holding a series of rods, with ten sliding beads on each. When all the beads had […]
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