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Which of the following is used only for data entry and storage, and never for processing?

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Which of the following is used only for data entry and storage, and never for processing?

(a) Mouse

(b) Dumb terminal

(c) Micro computer

(d) Dedicated data entry system

I had been asked this question at a job interview.

The query is from Failure with Nonvolatile Storage in division Recovery System of Database Management

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Right answer is (b) Dumb terminal

The explanation is: Dumb terminals are those that can interpret a limited number of control codes.

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