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The abacus is invented in Babylonia
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The Antikythera Device, a bronze mechanical lunar month calculator, is constructed in Greece
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Wilhelm Schickard designs the first known mechanical calculator, the "Calculating Clock" to multiply large numbers.
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The first typewriter is patented by William Austin Burt. It's slow and clumsy, but it's the first writing machine.
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Turing completes the ACE, considered by many to be the first programmable digital computer, at Britain's National Physics Laboratory
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IBM introduces the first disk storage system, the IBM RAMAC 305. It holds 5 MB of data on 50 2-foot wide platters.
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The Apple II computer is introduced at a trade show
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Steve Jobs introduces his new computer, the NeXTcube, with an object-oriented operating system
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Apple releases the iMac
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ipad wifi model is released
