A common input for POS systems is: MCQ with Answer and Explanation

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A common input for POS systems is:

A. Mouse only

B. Joystick

C. Touchscreen and barcode scanner

D. Standard keyboard

Answer: Option C

Solution (By JKSSB Mock Tests)

Retail efficiency.

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Question #1

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The technology behind modern touchscreens is primarily:

A. Surface acoustic wave

B. Capacitive

C. Infrared

D. Resistive

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Correct Answer: Option B

Explanation:
Capacitive touchscreens are common in smartphones and tablets.

This question belongs to: Computer Computer Hardware

Question #2

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Which type of monitor uses liquid crystals for display?

A. Plasma Monitor

B. CRT Monitor

C. LED Monitor

D. LCD Monitor

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Correct Answer: Option D

Explanation:
LCD (Liquid Crystal Display) monitors use liquid crystals.

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Question #3

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The best monitor for color-critical work is typically:

A. TN panel

B. Basic LED

C. IPS with wide gamut and calibration support

D. OLED for office

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Correct Answer: Option C

Explanation:
Accurate reproduction.

This question belongs to: Computer Computer Hardware

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