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The ‘@’ sign is centuries old, and was used in Europe to denote a unit of weight (the “arroba”) equivalent to 25 lbs.
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The first computer mouse was invented by Doug Engelbart in around 1964 and was made of wood.
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A bag of marijuana was the first thing ever bought and sold over the internet.
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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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