Which of the following peripheral devices are considered to be input devices only?
1.Microphone
2.Projector
3.Joystick
4.Scanner
5.Trackball
A1, 3, 4 & 5 only ✓ Correct
B1, 2, 4 & 5 only
C2, 3, 4 & 5 only
D1, 2, 3 & 4 only
Correct answer: (A) 1, 3, 4 & 5 only
Explanation
A microphone, joystick, scanner and trackball are all input-only devices.
Statement 1, the microphone, inputs sound into the computer.
Statement 2, the projector, is an output device that displays images, so it is excluded.
Statement 3, the joystick, inputs directional and control signals.
Statement 4, the scanner, inputs images and documents as digital data.
Statement 5, the trackball, inputs pointer movement like a mouse.
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