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History of Computers by Mind Map: History of Computers
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History of Computers


Used by the Babylonians in 300 BC

Used for Mathematical Problems.


invented in 1617

By John Napier

Stepped Reckoner

was able to add , multiply, subtract and divide

invented by Gottfried Wilhelm Leibniz


invented in 1642

by a 19 year old named Blaise Pascal

didnt sell alot because the prices were too high

Could only add

Punch Cards

Frenchmen Joseph Marie Jacquard came up with the idea

in 1801

Analytic Engine

In 1822 , invented by mathematician Charles Babbage

device was large as a house and powered by 6 steam engines

punched paper could be used as a storage mechanism

Hollerith desk

made by Hollerith ,which consisted of a punch card reader that sensed the holes in the card and a large dial indicator that showed results of the count

Built the company IBM

punch cards were used to track

Mark 1

Built on a partnership between Harvard and IBM in 1944. U.S millitary needed a mechanical computer to do scientific calculations

weighed 5 tons , 500 miles of wires and 8 feet 11 inches tall

a moth was found by Grace Hopper in the Mark 1 . Grace Hopper was a programmer for the Mark 1.


Built by Konrad Zuse in 1941

the first


was a all electronic digital computer