Computer

CHPE

DEVELOPMENT OF COMPUTER

Actually speaking electronic data processing does not go back more than just half a century i.e. they are in existence merely from early 1940’s. In early days when our ancestor used to reside in cave the counting was a problem. Still it is stated becoming difficult. When they started using stone to count their animals or the possession they never knew that this day will lead to a computer of today. People today started following a set of procedure to perform calculation with these stones, which later led to creation of a digital counting device, which was the predecessor the first calculating device invented, was known as ABACUS.

ABACUS

Abacus is known to be the first mechanical calculating device. Which was used to be performed addition and subtraction easily and speedily? This device was a first develop Ed by the Egyptians in the 10th century B.C, but it was given it final shape in the 12th century A.D. by the Chinese educationists and finally emerged in 20th century. Abacus is made up of wooden frame in which rod where fitted across with rounds beads sliding on the rod. It is divided into two parts called ‘Heaven’ and ‘Earth’. Heaven was the upper part and Earth was the lower one. Thus any no. can be represented by placing the beads at proper place.

Abacus diagram

The earliest analog computer was developed by Antikythera, it was designed to calculate astronomical position. It was invented in the year 1901 dated to be C.100BCE

John Napier

Later on John Napier discovered logarithms for computational purpose

John Napier’s Bones

John Napier is a Scottish mathematician and politician. He invented the first system of logarithms. He was one of the first to use the decimal point in expressing decimal fractions in a systematic way. The mechanical device he invented based on his system of logarithm was called John Napier’s Bones, and it was used for performing arithmetic operation like multiplication and division of large number.

In thus...