COMPUTER SCIENCE UNIT 1 YR 8

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11 Terms

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software

programs and operating systems e.g. microsoft windows

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input device

sends data into a computer

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hardware

physical parts of a computer system

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output device

receives information from a computer and presents it to the user

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storage device

keeps data so it can be used later

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example held in ram

a document or program currently running

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CPU

central processing unit, fetch decode execute cycle

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volatile

contents are lost when power is switched off

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ROM

read only memory .stores instructions that remain when power is off

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optical storage

way to save and read digital data using light e.g. laser

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RAM

random access memory memory that stores programs and data being used it is volatile