Which input device is used in retail for price scanning? MCQ with Answer and Explanation

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Which input device is used in retail for price scanning?

A. POS barcode scanner

B. Graphics tablet

C. Joystick

D. Microphone

Answer: Option A

Solution (By JKSSB Mock Tests)

Speeds up checkout process.

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Question #1

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The process of converting analog to digital in scanners is done by:

A. CU

B. DAC

C. ADC

D. ALU

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Correct Answer: Option C

Explanation:
Analog to Digital Converter digitizes scanned data.

This question belongs to: Computer Computer Hardware

Question #2

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Which technology is used in some keyboards for silent operation?

A. Optical only

B. Mechanical clicky

C. All are loud

D. Scissor-switch or membrane

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Correct Answer: Option D

Explanation:
Suitable for offices.

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Question #3

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Curved monitors are preferred for:

A. Portability

B. Low power consumption

C. Office text work

D. Immersive gaming and wide viewing

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Correct Answer: Option D

Explanation:
They provide better peripheral vision.

This question belongs to: Computer Computer Hardware

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