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invention of electricity
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Period: to
1st generation
ENIAC
electrical numerical integration and calculator.
large and expensive
vacuum tubes -
Period: to
2nd generetion
made by transistors much smaller faster and cheaper -
Period: to
3rd generation
made by integrate circuit.
smaller, faster and cheapepr -
Period: to
4th generetion
microprossessd (small silicon chip with thousand of circuits) smaller, portables, cheaper , less electricity and less heat -
Period: to
5th generetion
sients are developing they can `` THINK ´´ on their on
