The computer is a device that depends upon and operates the data or information. It can accept the input data, store the data, process it and output desired results.
There are three main functional units of a computer.
1st. Input Unit/Input Device
The device by which we provide information or instructions to the computer is called input devices. Input devices are keyboard, mouse, etc.
2nd. Central Processing Unit
The central processing unit is simply called the CPU. It is that unit that processes the input data.
3rd. Output Unit/ Output Device
The device which is used to get output data from the computer is called an output device. The examples are monitor, loudspeaker, etc.
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