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Beads on rods to count and calculate.

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Based on Napier's rules for logarithms.

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1st Generation computers contained vacuum tubes with no air inside to protect circuitry.

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Made of Silicon and won the Nobel Prize. Had on-off switch.

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First fully electronic, digital computer, built in the U.S. weighing 30 tons.

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Replaced vaccum tubes with transistors.

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Instructions for a computer that are loaded on to the computer every time it turns on.

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These computers used Integrated Circuits made of transistors, resistors, and capacitors.

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4th Generation computers include microchips.

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Apple launches Apple II which becomes the most used computer in schools. First commercial computer with mouse.

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First wide-selling personal computer. Very underrated.

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Computers in most homes

Faster and cheaper

Windows 95 first decent GUI

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Great increase in speed, storage, and memory

CD Drives

Networking and Internet capacities

Cell Phones and Wireless Technology