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1. Microsoft windows
2. Apple IOS
3. Andriod

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1. Motherboard- connects all the circuitry and components of the computer.
2. Intel is the leading manufacture of microprocessors.
3. Silicon valley is located in california, west coast
4. computers only understand math, binary code is used to program it.
5. input, process, output, & storage.

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1972 - present. microprocessor (brain on a chip). remote start, programmable microwaves, tablets smartphones.

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1964-1971. computer chips(IC). Texas instrument develops computer.

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1956-1964 Transistors. IBM led the way

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1945-1956 vacuum tube examples: ENIAC and UNIVAC. Machly and eckert developed computers for US goverment and GE.

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devices to keep track of numbers of perform basic math functions. no electricity