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  • Which of the following is not a data scanning unit?
Multiple choice

Which of the following is not a data scanning unit?

  1. Optical mark readers

  2. Bar code readers

  3. Optical recognition systems

  4. PDA

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A PDA (Personal Digital Assistant) is a mobile device, not a data scanning unit like OMR, barcode readers, or OCR systems.

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