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  1. 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 …

  2. LOCATIONS - Abacus Technology

    HEADQUARTERS MAJOR PROJECT OFFICES ADDITIONAL STAFF LOCATIONS

  3. How to Use an Abacus (with Pictures) - wikiHow

    Feb 19, 2026 · 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 …

  4. 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 …

  5. What Is an Abacus? - Computer Hope

    Feb 22, 2026 · Meaning of the abacus, a mechanical device for performing mathematical calculations, its history, usage today, benefits of learning it, and usage instructions.

  6. 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, …

  7. ABACUS Definition & Meaning - Merriam-Webster

    The meaning of ABACUS is an instrument for performing calculations by sliding counters along rods or in grooves. Did you know?