Generation and Classification of Computer
Development of computer
Abacus – Abacus is known to be the first mechanical calculating device. Which was used to be performed addition and subtraction easily and speedily.Abacus is made up of wooden frame in which rod where fitted across with rounds beads sliding on the rod. 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
NAPIER’S BONES- As the necessity demanded, scientist started inventing better calculating device. In thus process John Napier’s of Scotland invented a calculating device, in the year 1617 called the Napier Bones. In the device, Napier’s used the bone rods of the counting purpose where some no. is printed on these rods. These rods that one can do addition, subtraction, multiplication and division easily.
Pascal Calculator – In the year 1642, Blaise Pascal a French scientist invented an adding machine called Pascal’s calculator, which represents the position of digit with the help of gears in it.
Leibnz Calculator- In the year 1671, a German mathematics, Gottfried Leibniz modified the Pascal calculator and he developed a machine which could perform various calculation based on multiplication and division as well.
Analytical Engine – In the year 1833, a scientist form England knows to be Charles Babbage invented such a machine.This device was called Analytical engine and it deemed the first mechanical computer. It included such feature which is used in today’s computer language. For this great invention of the computer, Sir Charles Babbage is also known as the father of the computer.
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