Tuesday, 7 May 2013

History of Computers

Computing history Starts with Abacus developed by Chinese around 3000 to 5000 years ago.


In 1614, John Napier developed Logarithm
In 1642, Blasé Pascal developed a mechanical calculator.
A German scientist   Leibnitz modified this calculator.

In 1822, Charles Babbage developed a machine named Difference Engine. This can perform Addition and Subtraction.
Difference Engine

In 1833, another machine named Analytical Engine was developed by Charles Babbage.
                                                             Analytical Engine
This is known as first mechanical computer. So he is known as the father of Computers.
                                                                  Charles Babbage

The first computer Programmer was Lady Ada Lovelace. She worked along with Babbage for the development of Analytical Engine.
                                                              Lady Ada Lovelace

George Boole developed Boolean algebra in 1840

Herman Hollerith developed a tabulating machine. It used for a census in 1890.

The first general purpose computer was developed in 1941. Its known as ENIAC (Electronic Numerical Integrator and Calculator.

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