Question

......was the first calculating device​

Answer 1

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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Answer 2

Answer:

*Answer*

Abacus was the first calculating device.

An abacus uses several rows of beads to represent numbers; each row stands for a place value and the arrangement of beads in a row stands for a digit. The first mechanical calculating machine was invented in 1642 by Blaise Pascal, a 19-year-old Frenchman. Pascal's machine used gears and could add and subtract.

Explanation:

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