What is computer ?
A computer is a programmable device that can store, retrieve, and process data. The term "computer" was originally given to humans (human computers) who performed numerical calculations using mechanical calculators, such as the abacusand slide rule. The term was later given to a mechanical device as they began replacing the human computers. Today's computers are electronic devices that accept data (input), process that data, produce output, and store (storage) the results.
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