The first hard disk drive, released by IBM in 1956, weighed over a ton and stored just 5 MB of data.
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The light bulb made electric lighting widely practical.
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The telegraph enabled rapid long-distance messaging.
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Maglev trains use superconducting magnets to levitate above the track, eliminating friction and enabling 600+ km/h speeds.
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The first programmable electronic general-purpose computer, ENIAC, weighed 27 tons and consumed 150 kilowatts of power.
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Solid-state drives (SSDs) use flash memory with no moving parts, making them faster and more durable than hard disk drives.
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The first emoji was created in 1999 by Japanese designer Shigetaka Kurita for a mobile internet platform.
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The Itaipu Dam is one of the largest hydroelectric projects in operation.
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Electric cars predate gasoline-powered cars — electric vehicles were common in the early 1900s before oil became dominant.
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