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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, till 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
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
The Abacus and the Numeral Frame | National Museum of . . . The Abacus and the Numeral Frame The abacus is a computing device on which arithmetic calculations are performed by sliding counters (beads, pebbles, or flat discs) along rods, wires or lines The instrument may have originated in the Middle East before the time of Christ
Abacus - Math is Fun The abacus has been around for thousands of years, and is still used in some parts of the world 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 them to find the square root of whole numbers
Abacus | Encyclopedia. com An abacus is a wooden or metal rectangular frame with vertical bars containing movable beads Prior to the advent of the abacus, stones were used as computational tools
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