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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 - Simple English Wikipedia, the free encyclopedia
The Latin word came from ancient Greek ἄβαξ (abax) which means something without base, or (improperly) any piece of rectangular board or plank Both abacuses' and abaci are used as plurals The user of an abacus is called an abacist (soft or hard 'c')
- Abacus (architecture) - Wikipedia
The diminutive of abacus, abaculus, is used to describe small mosaic tiles, also called abaciscus or tessera, used to create ornamental floors with detailed patterns of chequers or squares in a tessellated pavement
- 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 (disambiguation) - Wikipedia
An abacus is a counting frame Abacus may also refer to:
- Roman abacus - Wikipedia
The Ancient Romans developed the Roman hand abacus, a portable, but less capable, base-10 version of earlier abacuses like those that were used by the Greeks and Babylonians [1] The Roman abacus was the first portable calculating device for engineers, merchants, and presumably tax collectors
- Mental abacus - Wikipedia
The abacus system of mental calculation is a system where users mentally visualize an abacus to carry out arithmetical calculations [1] No physical abacus is used; only the answers are written down
- Abacus - Wikiwand
An abacus, 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 Rus
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