Question

what is the first calculating device​

Answer 1

Answer:

abacus

An abacus is considered one of the first calculating devices invented by man. It is a manual device which takes time and a great deal of experience to master. 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.

Explanation:

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Answer 2

Explanation:

abacus

An abacus is considered one of the first calculating devices invented by man. It is a manual device which takes time and a great deal of experience to master. 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

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