How Calculators Work There may have been some time when the most complicated computations people were required to make could be executed using their fingers or toes. However, today it's nearly impossible for many people to imagine performing any task that involves numbersfor everything from math assignments from tax forms to tipping servers at restaurants with out the aid of at the very least a pocket calculator. Actually, electronic calculators are so ubiquitous that it's hard imagine that they weren't widespread until the latter half of the 20 th century. Before the invention in the present-day calculator the people were using other devices for computation. The abaci for instance, is one of the ancestors of the calculator. Most likely originally of Babylonian origin the earliest abaci can be believed to be boards that had the position of counters reflected numerical values. The modern abacus -- that can still be used today from China, Japan and the Middle East -...
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