Which of the following is an example of an input device?

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Rajasthan Police Constable (Held On: 13 May 2022 Shift 2)
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  1. Speaker
  2. DLP Projector
  3. Barcode Reader
  4. Bubblejet Printer

Answer (Detailed Solution Below)

Option 3 : Barcode Reader
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Rajasthan CET Graduates (Aim High) - Mini Test
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Detailed Solution

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The correct answer is Barcode Reader.

Key Points

  • Barcode Reader:
    • This is an example of an input device used to read information contained in barcodes.

Additional Information

  • Speaker:
    • This is an example of an output device.
    • It produces sound through a vibrating transducer called a driver.
  •  DLP Projector:
    • It stands for Digital Light Processing Projector.
    • This is an example of an output device.
  • Bubblejet Printer:
    • A Bubblejet printer is an example of an output device that is used to print information on paper.
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