FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -abacus, plural abaci or abacuses, calculating device, probably of Babylonian origin, that was long important in commerce. It is the ancestor of the modern calculating machine and computer.

Detailed explanation-2: -The first calculating device that was invented was the Abacus. It is a manual calculating device that consists of rows of beads representing a place of value and digits. The abacus was invented by Blaise Pascal in the year 1642.

Detailed explanation-3: -Pascaline, also called Arithmetic Machine, the first calculator or adding machine to be produced in any quantity and actually used. The Pascaline was designed and built by the French mathematician-philosopher Blaise Pascal between 1642 and 1644.

Detailed explanation-4: -Alternatively called the counting frame, an abacus is a mechanical device used to assist a person in performing mathematical calculations and counting. Who built the first abacus? Why was the abacus used?

Detailed explanation-5: -Abacus was the first mechanical calculator.