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 …

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 …

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 …

Oct 11, 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 …

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, …

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 …

Sometimes blind people will use an abacus, because they can feel the numbers easily. Expert abacus users can sometimes do calculations faster than on a calculator, and can even use …