Question

What is the name of the Calculating machine , using beads , which is the forerunner of the modern calculator ?
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Answer 1

Answer:

Mechanical Counting Devices - Abacus, Napier's Bones, Slide Rule. The abacus was one of the first adding machines. The abacus is made out of beads strung by several wires. The position of a bead determines its value.

Explanation:

Answer 2

Abacus, plural abaci or abacuses, calculating device, probably of Babylonian origin, that was long important in commerce. It is the ancestor of the modern calculating machine and computer.

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