# COMPUTER FUNDAMENTALS

## COMPUTER HISTORY AND EVOLUTION

### DEVELOPMENT OF COMPUTERS

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Abacus is used to perform ____?
 A Four operation B Only Addition C Only Subtraction D Both Addition and Subtraction
Explanation:

Detailed explanation-1: -The standard abacus can be used to perform addition, subtraction, division and multiplication; the abacus can also be used to extract square-roots and cubic roots.

Detailed explanation-2: -It is used to perform addition, subtraction, division and multiplication. It can also be used to extract square roots and cubic roots of a number. The beads are manipulated with the help of the index finger or the thumb of one hand.

Detailed explanation-3: -Although calculators and computers are commonly used today instead of abacuses, abacuses remain in everyday use in some countries. Merchants, traders, and clerks in some parts of Eastern Europe, Russia, China, and Africa use abacuses. The abacus remains in common use as a scoring system in non-electronic table games.

Detailed explanation-4: -Probably of Babylonian origin, an abacus is a calculating instrument that uses beads that slide along a series of wires or rods set in a frame to represent the decimal places. It is the ancestor of the modern digital calculator.

There is 1 question to complete.