Abaci Definition & Meaning - Merriam-Webster
1. : an instrument for performing calculations by sliding counters along rods or in grooves. 2. : a slab that forms the uppermost member or division of the capital of a column.
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 the adoption of the Arabic numeral system. [1]
Abacus | Definition, History, Origin, & Facts | Britannica
Sep 24, 2024 · 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.
The Abacus and the Numeral Frame - National Museum of American History
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 - 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.
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 - HistoryMaps
Oct 13, 2024 · The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool which has been used since ancient times. It was used in the ancient Near East, Europe, China, and Russia, millennia before the adoption …
Abacus - Encyclopedia.com
Jun 27, 2018 · Abacus. The abacus is the most ancient calculating device known. It has endured over time and is still in use in some countries. An abacus consists of a wooden frame, rods, and beads. Each rod represents a different place value — ones, tens, hundreds, thousands, and so …
Abacus -- from Wolfram MathWorld
Oct 21, 2024 · Abacus. A mechanical counting device consisting of a frame holding a series of parallel rods on each of which beads are strung. Each bead represents a counting unit, and each rod a place value.
www.learningtheabacus.com
In this website, we use numerous examples with step-by-step instructions to calculate the correct solution. At this point , all of the examples use one or two Cranmer abacuses (abaci) or Japanese abacuses (abaci). Future pages will use other types of abaci.