The computer system process data inform information through four operations; input, process ,storage and output.

The user enters the data by using an input device (such as keyboard ,mouse ) electronically and is prossed by the prosessor. In the prossing operation, data is manipulated to process or transform it into information.

the storage (such as hard disk, compact disk (CD), diskettes ) holds data, information and  programs. The output devices (such as monitor, printer) present the prossed data as useful information products to the user.
♥