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Before a computer can process your data, you need some method to

input

the data into the machine. The device you use will depend on what form this data takes (be it text, sound, artwork, etc.).

Similarly, after the computer has processed your data, you often need to produce

output

of the results. This output could be a display on the computer screen,

hardcopy

on printed pages, or even the audio playback of music you composed on the computer.

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12y ago

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