What best describes a touch screen?

C. Both an input and output device

Computer · Introduction to Computing · page 16 of 19

Input & Output Devices MCQs with Answers

Includes 39 past paper MCQs (marked).

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Input & Output Devices MCQs (151–160)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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151.
Which of the following is an optical input device used for direct interaction with a computer screen?
Correct Answer: A. Light Pen
One-liner
A Light Pen is an optical input device that allows users to interact directly with a computer screen by detecting light emitted from the display.
152.
Which action is performed by using input devices like a keyboard or mouse?
Correct Answer: D. Input
One-liner
Input devices like keyboard and mouse are used to perform the Input action by sending data and commands into the computer.
153.
What type of keyboard interface uses a parallel connection?
Correct Answer: B. Parallel keyboard
One-liner
The keyboard interface that uses a parallel connection is the Parallel keyboard.
154.
Past Paper MCQ
Which type of mouse utilizes laser technology to detect movement?
Correct Answer: B. Optical mouse
One-liner
An optical mouse uses laser or LED technology to detect movement by capturing reflected light from the surface.
155.
What is the primary function of a keyboard in a computer system?
Correct Answer: A. Input device
One-liner
The primary function of a keyboard in a computer system is to serve as an input device.
156.
What term is used to describe the number of pixels per square inch on a computer monitor?
Correct Answer: B. Dot pitch
One-liner
The term used to describe the number of pixels per square inch on a computer monitor is dot pitch.
157.
What category of device does a plotter belong to in computing?
Correct Answer: C. Output device
One-liner
A plotter is an output device used to produce large-scale, high-precision printed graphics such as engineering drawings and architectural blueprints.
158.
Which device is primarily used for voice recording on a computer?
Correct Answer: B. Microphone
One-liner
The device primarily used for voice recording on a computer is the Microphone.
159.
What best describes a touch screen?
Correct Answer: C. Both an input and output device
One-liner
A touch screen is both an input and output device because it displays visual output while also accepting touch-based input from the user.
160.
What type of device is a trackball?
Correct Answer: D. Input device
One-liner
A trackball is an input device that allows the user to control the cursor by rotating a stationary ball with their fingers or palm.

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Input & Output Devices MCQs with Answers

Input & Output Devices MCQs (151–160)

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