Previous Year Question
Which one of the following groups have only input devices?
A.
Mouse, Keyboard, Printer
B.
Mouse, Keyboard, Projector
C.
Mouse, Keyboard, Monitor
D.
Mouse, Keyboard, Scanner
Correct Answer: D
Detailed Solution
Input Devices are hardware devices through which data or instructions are entered into a computer.
A Mouse is used to control the pointer and to provide commands such as selection and clicking.
A Keyboard acts as an input device for entering text, numbers and commands into a computer.
A Scanner reads a printed document, photograph or image and transfers it to the computer in digital form; therefore, it is also an input device.
In contrast, Printer, Projector and Monitor are output devices because they deliver processed information from the computer to the user.