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First generation:Wors 1940 and 1950 they vacumm tubes for circuits and magnetic for drums.
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1956 and 1964 are defined by day use of transitors intead of vacumm tubes core memory
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1965 and 1975 this generation used integrated circuits (ICS)(also known as sips or microchips)and this generation indued high level programming lenguajes.
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1975 and present this generation introduction microprocesor very long sale (integration(VLSI) technology and alloued for powerful-comnpact affon (hable personal computers
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started to present and future to the present caractericed by the develoment of artificial intelligent parallel procesing and the use of (VLS) technology