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Which is considered a direct entry input device?

  • A.Optical scanner
  • B.Mouse and digitizer
  • C.Light pen
  • D.All of the above

Answer: D

Correct answer: All of the above

Direct entry means data enters the machine without being keyed. An optical scanner, a light pen, and a mouse or digitiser all qualify: each converts a physical action or image straight into machine-readable form. A keyboard, by contrast, is a keying device.

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