History of Computer
A computer is an Electronic device designed by CHARLES BABBAGE who is known as a "Father of Computer"in the early 1820's .It is Capable of Performing basic operations.
CHARLES BABBAGE
ABACUS 2500BC
Abacus is the first known calculating machine used for counting.It is made of beads strung on cords and is used for simple arithmetic calculations.
The Cords correspond to position of decimal degits.
The beads represent digits.Abacus is mainly used for addition,subtraction,and later for multiplication.
NAPIER'S BONES - 1614 AD
The Napier's Bones was invented by John Napier,he is a Scottish Mathematician.
A set of bones consisted of nine rods. It is used for Multiplication.
The Slide Rule - 1633AD
The Slide Rule was invented by William Oughtred.It performs Multiplication and Division.
The Rotating Wheel Calculator - 1642AD
It was developed by Blaise Pascal a French Philosopher,using components such as gears and leavers.
The Difference Engine - 1822AD
It was built by Charles Babbage.It calculate and tabulate polynomial functions.
Hollerith Tabulating Machine - 1890 AD
It was designed by Herman Hollerith using punched cards.This machine is able to read the information.
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