history of computer
DESCRIPTION
This is a history about computersTRANSCRIPT
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F R O M A B D U L L A H Z I A
4F SCARSDALE INTERNATIONAL
SCHOOL
HISTORY OF COMPUTER
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People in old times used to count on their fingers.
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After some time people stopped counting on fingers and started counting on stones
People counting on stones
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Abacus was first calculating machine made by the Chinese about 5000years ago.
Abacus
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Pascal Arithmetic machine
Some years later in1642 a young French mathematician named Blaise Pascal was working in his fathers office. He invented Pascal's arithmetic machine.
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Babbage Engine
The first calculating machine that can be truly called a computer was invented in England by Charles Babbage in 1835.
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Tabulating machine
Herman Hollerith worked at the census bureau in 1880s he wanted to come up with a better way to count population so he invented the tabulatingmachine
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Napiersbone
Napiers bone was a very good calculating machine at the old time it a good machine now also but no one, buys it