Question

Abacus was the first _______________.

• A. electronic computer
• B. mechanical computer
• C. electronic calculator
• D. mechanical calculator

Answer 1

The correct option is D mechanical calculator

Abacus was the first mechanical calculator.

Uses by the blind. An adapted abacus, invented by Tim Cranmer, called a Cranmer abacus is still commonly used by individuals who are blind. A piece of soft fabric or rubber is placed behind the beads so that they do not move inadvertently.

A mechanical calculator, or calculating machine, is a mechanical device used to perform automatically the basic operations of arithmetic. Most mechanical calculators were comparable in size to small desktop computers and have been rendered obsolete by the advent of the electronic calculator.