Question

which is oldest computational tools? ​

Answer 1

Answer:

abacus

The earliest recorded calculating device is the abacus. Used as a simple computing device for performing arithmetic, the abacus most likely appeared first in Babylonia (now Iraq) over 5000 years ago.

Answer 2

Answer:

the earliest recorded calculating device is the abacus .used as a simple computing device for performing arethmatic.......

Explanation:

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