WORKING PRINCIPLE OF COMPUTER

The computer converts data into information by performing various actions on the data. So, it is also known as information processing machin...

The computer converts data into information by performing various actions on the data. So, it is also known as information processing machine (IPM). The conversion of raw data into useful information  is key task of computer.

Fig: Block diagram of computer

Input

The first step of computer is input in which computer task raw data from the user through input devices such as keyboard, mouse, joystick, barcode etc and provides in computer understanding form for processing.

Processing

This is the second step of computer working in which computers processor (CPU) process the input data based on predefined set of instructions. After processing data, it sends them to the output device under the supervision of control unit.

Output

This is the next step of computer working which the computer displays. The output is meaningful information through output devices such as monitor, printer, speaker etc.

Storage

This is the next step of computer working in which the computer stores the processed information permanently on storage devices such as Hard disk, CD/DVD.

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