Abacus-based mental calculation (AMC), which was derived from the abacus, is the act of performing calculations, including addition, subtraction, multiplication, and division, in the mind by manipulating …

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Nov 17, 2025 · Abacus, calculating device, probably of Babylonian origin, that was long important in commerce. It is the ancestor of the modern calculating machine and computer. The abacus was in …

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Mar 28, 2025 · An abacus is a manual calculating device made of a wooden or plastic frame with rods and beads. Each bead represents a number, and moving them helps perform addition, subtraction, …

An abacus (plurals abacuses or abaci), also called a counting frame, is a calculating tool for performing arithmetical processes, often constructed as a wooden frame with beads sliding on wires.

Aug 6, 2025 · The abacus (the suanpan is the most useful variety) is a deceptively simple calculating tool still used all over the world. It's a useful learning device for the visually impaired, as well as for …

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IT'S WHAT WE DO. Abacus serves a wide and growing group of industries. Our employees can be found supporting clients of all types. Click and view many of the industries where we have had …