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Douglas Engelbart invented the first mouse made out of wood and two gear-wheels. Was first patented as the "X-Y Position Indicator for a Display System."
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Pier Giorgio Perotto invented one of the first printing programmable calculators that could perform addition, subtraction, multiplication, division & square roots. Produced by Italian manufacturer Olivetti.
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Ralph Baer invented the first video game console to play a two player game on the tv.
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Robert Dennard redesigned and modified RAM to to function quicker and take up less space.
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Designed by scientists and engineers at MIT’s Instrumentation Laboratory. Weighed about 70 lbs, and measured about 1 cubic foot in volume. Astronauts used this device to communicate using two digit codes, entering more than 10,000 codes in each trip to the moon.