Question

fill in the blanks 1 : the
is the earliest mechanical counting tool used for arithmetic calculations


the — is the earliest mechanical counting tool used for arithmetic calculations ​

Answer 1

Answer:

Abacus., The earliest known calculating device is probably the abacus.

Explanation:

It was used as a simple computing device for performing arithmetic, the abacus most likely appeared first in Babylonia (now Iraq) over 5000 years ago. Its more familiar form today is derived from the Chinese version. The abacus is more of a counting device than a true calculator.

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Answer 2

Answer:

1. Abacus
2. Abacus

Explanation:

1. Abacus was the first mechanical calculating device, developed by Chinese about 5000 years ago. It was used for counting large numbers and doing arithmetic calculations such as addition, subtraction, multiplication and division. 2. Describe punched card.