Computer Hardware MCQs
Practice Computer Hardware MCQs with answers and detailed explanations covering input devices, output devices, scanners, printers, keyboards, monitors and computer hardware components frequently asked in competitive examinations.
Question #1
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Which of the following is an input device primarily used for entering text and commands into a computer?
Correct Answer: Option D
Explanation:
Keyboard is a primary input device used for typing text and commands. Monitors and printers are output devices, while speakers output audio.
Keyboard is a primary input device used for typing text and commands. Monitors and printers are output devices, while speakers output audio.
This question belongs to:
Computer
Computer Hardware
Question #2
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What type of scanner is commonly used in offices for converting physical documents into digital images?
Correct Answer: Option C
Explanation:
Flatbed scanners are widely used in offices for document digitization due to their ease of use and quality.
Flatbed scanners are widely used in offices for document digitization due to their ease of use and quality.
This question belongs to:
Computer
Computer Hardware
Question #3
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Which device converts digital signals from the computer into visual output on screen?
Correct Answer: Option B
Explanation:
Monitor is an output device that displays visual information from the computer.
Monitor is an output device that displays visual information from the computer.
This question belongs to:
Computer
Computer Hardware
Question #4
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What is the full form of CPU in computer hardware?
Correct Answer: Option A
Explanation:
CPU stands for Central Processing Unit, which is the brain of the computer responsible for processing instructions.
CPU stands for Central Processing Unit, which is the brain of the computer responsible for processing instructions.
This question belongs to:
Computer
Computer Hardware
Question #5
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Which of the following is NOT an input device?
Correct Answer: Option C
Explanation:
Plotter is an output device used for printing large graphics, while the others are input devices.
Plotter is an output device used for printing large graphics, while the others are input devices.
This question belongs to:
Computer
Computer Hardware
Question #6
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What technology is used in most modern keyboards to detect key presses?
Correct Answer: Option D
Explanation:
Membrane keyboards are common in standard office setups due to affordability, though mechanical are also popular.
Membrane keyboards are common in standard office setups due to affordability, though mechanical are also popular.
This question belongs to:
Computer
Computer Hardware
Question #7
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Which output device is used to produce hard copies of documents on paper?
Correct Answer: Option C
Explanation:
Printer produces physical copies (hard copies) of digital documents.
Printer produces physical copies (hard copies) of digital documents.
This question belongs to:
Computer
Computer Hardware
Question #8
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RAM is an example of which type of memory?
Correct Answer: Option D
Explanation:
RAM is volatile memory that loses data when power is turned off.
RAM is volatile memory that loses data when power is turned off.
This question belongs to:
Computer
Computer Hardware
Question #9
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What does the term DPI refer to in the context of printers and scanners?
Correct Answer: Option C
Explanation:
DPI stands for Dots Per Inch, measuring the resolution of printers and scanners.
DPI stands for Dots Per Inch, measuring the resolution of printers and scanners.
This question belongs to:
Computer
Computer Hardware
Question #10
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Which component stores data permanently even when the computer is powered off?
Correct Answer: Option D
Explanation:
HDD is a non-volatile secondary storage device.
HDD is a non-volatile secondary storage device.
This question belongs to:
Computer
Computer Hardware
