- Abacus - Wikipedia
An abacus (pl abaci or abacuses), also called a counting frame, is a hand -operated calculating tool which was used from ancient times, in the ancient Near East, Europe, China, and Russia, until largely replaced by handheld electronic Calculators, during the 1980s, with some ongoing attempts to revive their use [1][2][3] An abacus consists of
- How to Use an Abacus (with Pictures) - wikiHow
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 anyone who wants to learn the roots of the modern calculator
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- Abacus - New World Encyclopedia
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 The user, called an abacist, slides counters by hand on rods or in grooves
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- Abacus | Definition, History, Origin, Facts | Britannica
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 universal use in Europe in the Middle Ages, as well as in the Arab world and in Asia
- What is Abacus and How Does It Work? A Complete Guide
The abacus is one of the oldest calculating tools, used for centuries to perform arithmetic calculations Often called the world’s first “calculator,” it helps improve mental math, concentration, and cognitive skills in learners of all ages
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