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. Thus the working principle of computer is based on the following four steps.
This is the first step of computer working in which computer task raw data form the user through input devices such as keyboard, Mouse, joystick, barcode reader, etc and provides in computer understanding form for processing.
This is the Second step of computer working in which computer’s processor (CPU) processers the input data based on predefined set of instructions. After processing data is sends them to the output device under the supervision of control unit.
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.
This is the next step of computer working which the computer stores the processed information permanently on storage devices such as Hard disk, CD/DVD.