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Garrett Morgan is credited with inventing the first automatic traffic light that uses electricity in 1923. Although there were other traffic lights, his has a t-shaped pole and has 3 positions.
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The first car radio was invented by William Lear, a radio parts owner and Elmer Wavering.they teamed up with 2 brothers and put it in there cars that they make.
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In 1944 the kidney dialysis machine by Willem kolff.
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In 1951 the first tape recorder was invented by Charles Ginsburg, who led the team that developed it to go at a much slower rate because the recording heads rotated at high speed.
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The LASER in 1960 invented by Theodore Maiman. It is now used to read blue-ray.
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the home vcr was invented in 1970 by chariles ginsburg. They were more durable than reels.
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The internet was invented in 1982 by vinton cerf and bob kahn.
Alec jerfferys invented the DNA fingerprinting in 1985 and is very useful for finding out who the criminal was. -
in 1994 yahoo was founded by jerry yang and david filo.
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the playstation 2 was invented in 2000 by sony corporation.
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the smart board 800 was invented by david martin in 2010.