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It is used for an old computer and for to work 1computer it needs 4000vacuumtubes. It is very large
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Abacus was invented in 2600BC and at first it was used for adding and subtracting.
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It is about Abacus, vacuum tubes, Trasisters, Micro processer
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Napier's Rods are used for multipling
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He invented the first caculater named Pascalin
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He invented a calculater that is much better then Pascalin it can multiply and subtract too.
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He is called the grandfather of computer. And he made a most usefull computer in that year
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She was the first girl programer and made calculater
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He broke all the codes that what going to the war.
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John Bardeen Invented the transistor and
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He is a billionare and a founder of microsoft
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(late 1960s) Integrated circuits are eletrical circuits and another name for a chip. and jack kilby invented it
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It was Invented early 1970's and it is used untill now . It works much betted then vacuumtubes and it is the 4th generation
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it is invented in 2010 sep 8 and it is working with a charge
