CBSE Class 9 Computer Applications
Question 46 of 75
Types of Hardware — Question 8
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Question Question 8
Which of the following does not represent an I/O device?
- Speaker which beeps
- Plotter
- Joystick
- ALU
ALU
Reason — ALU (Arithmetic and Logical Unit) is a part of CPU which performs arithmetical operations. Speaker and plotter are output devices while joystick is an input device.