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The jet engine was made in the 1940.it was made when it was world war 2.

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in the 1950 television were made it replaced the radio,newspapers,and magazines

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in the 1970 microprocessor were made the world first general microprocessor the intel 4004 came out November 1971

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1990 people had cell phones and computers at that time and people were exposed to new technology

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1991 was also the year when Advanced Micro Devices (AMD) announced its AMD 386 microprocessor  which was developed to offer direct competition to Intel's 386 chips