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First-generation: Made in 1822 by Charles Babbage
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Second generation- Made between 1959-1965 by Walter H. Brattain
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Third generation- Made between 1964 to 1971 by Honeywell International
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Fourth-generation- Made between 1971-and 1980 by Federico Faggin.
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Fifth-generation- Made in 1982 by Japan's Ministry of International Trade and Industry.
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Sixth generation- Made in 2000. (Artificial intelligence. like Alexa) by Intel Corporation