Development of computer



Abacus is known to be the first mechanical calculating device.

It was used to be performed addition and subtraction easily and speedily.

This device was a first developed 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.



 As the necessity demanded, scientist started inventing better calculating device.

In this process, John Napier՚s of Scotland invented a calculating device, in the year 1617 called the Napier Bones.

In the device, Napier has used the bone 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 help position of digit with the help of gears in it.




Leibniz 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 from England knows to be Charles Babbage invented such a machine. T

his device was called Analytical engine and it deemed the first mechanical computer.

 For this great invention of the computer, Sir Charles Babbage is also known as the father of the computer.

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