Functions of computer

There are four functions in this definition:

Input

Processing

Output

Storage

Input:

Everything we give to the computer is called input.

The collection of raw facts and figures is called data. Data 1s entered in the computer through input devices e.g. keyboard, mouse etc.

Data Processing:

The system that accepts data and manipulates it in a useful and meaningful form is called data processing.

The operations carried out on data to convert it into useful information are called data processing.

CPU is a device that is used to process the data arithmetically or logically to convert it into information.

Output:

The organized and meaningful form of data after processing is called information.

Output devices show the results or information in the form of output.

Output devices are printers, monitors etc.

Storage:

Data and information are stored on secondary storage devices for later use.

Secondary storage devices are CDs, Hard disks, Floppy disks etc.