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Abacus - Wikipedia 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 an imagined abacus
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
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
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
The Abacus and the Numeral Frame - Smithsonian Institution 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
What is Abacus and How Does It Work? A Complete Guide 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, multiplication, and division quickly
Abacus - Math. net An abacus, also referred to as a counting frame, is a device used to perform calculations Abaci (or abacuses) can be used to teach arithmetic, perform practical calculations, and more
Abacus | Encyclopedia. com The abacus, an ancient calculating device, probably originated in Babylon around 2400 B C E as a "counting box " It was the world's first calculator, and contemporary versions are still in use today