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Question

Abacus was the first


A

Electronic computer

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B

Mechanical computer

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C

Electronic calculator

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D

Mechanical calculator

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Solution

The correct option is D

Mechanical calculator


Abacus: A frame containing wires with small balls that move along them. It is a mechanical device that is used to calculate arithmetic calculations quickly also called a counting frame.

It is a mechanical calculator not a electronic, mechanical and electrical calculator .

Hence, option (D) is the correct answer.


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