HISTORY OF COMPUTER

Source:Google.com

Probably man had an inherent desire  for using machines for mathematical  calculations. Oneofd the most ancient calculating machines was abacus invented by the chinese about 5000 years ago.even before that the ancient man tied knots on ropes to keep count of some events.Later on man invented faster and more versatile machines to help him in mathematical calculations .some notable landmarks in the development of these machines are hereunder.

PASCAL’S ADDING MACHINE:

Pascal,a French mathematician ,invented a machine in mind seventeenth century for adding numbers quickly.Ti contained a number of gears with the teeth numbered from 0 to 9.

LIEBINZ’s RECKONING MACHINE:

Pascals’s adding machine was capable of only addition and subtraction.Liebinz,in 1673,improved upon the machine to perform multiplication and division.However,Pascal’s and Liebniz’s machines,because of their complexity,cost and low reliability never became popular.

COLMAR’S MULTILPYING MACHINE:

Colmar’s a French scientist,in early nineteenth century,invented a machine similar to Liebniz’s Reckoning Machine that was capable of multiplying numbers quite fast.

BABBAGE’S DIFFENENCE ENGINE:

Charles Babbage in 1822 developed a machine known as the diffenence engine.It could solve differential equations.It had memory to store data and results.

BABBAGES’S ANALYTICAL ENGINE:

Charles Babbage in 1833 inproved his machine and named it as “Analytical Engine”.It was capable of all basic arithmetic operations and comparisons .It was based upon the concept of central processor,input ,output, memory etc.It also had the capability to change values already stored in memory.

Babbage is known as the father of modern computer .However because of lack technology,Babbage’s idea were not implemented totally.Most of his ideas remained as concepts to be implemented later.

Source:Google.com

THE FIRST COMPUTER:

Dr Howard Aiken of Harvard University,in association with IBM in 1944,constructed an electro-mechanical machine capable of processing a series of instructions in the form of a program. It was named Mark-1.This is considered to be the first operational computer.The mark I was a big machine,around 15.24 m(50’) long and 2.44m(8’) high comprising more than 750000 parts.It could complete one arithmetic operation on twenty three digit numbers in around three seconds.