In 1956, the IBM 350 hard disk drive had 3.75 MB of storage, weighed over 2000 lbs, had to be moved around with forklifts, and was delivered via large cargo airplanes.
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A singing birthday card has more computing power than the allied forces in 1945.
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In 1989, a British company made a laptop with a graphical user interface, a 60 hour battery life, SSD storage, and a touchpad.
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There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
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Students at MIT developed a wristband that can regulate your “thermal comfort”, which could possibly eliminate the need for central heating and cooling.
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