The Parts of a Computer System

A computer is an electronic device used to process data.

• A computer can convert data into information that is useful to people.
• A complete computer system includes four distinct parts:

                      Hardware

                      Software

                      Data

                      User

Hardware:  

• A computers hardware consists of electronic devices; the parts we can see and touch.
• The term "device" refers to any piece of hardware used by the computer,such as a Keyboard,Monitor,Modem,Mouse etc.

Software: 

• Software-also called programs-consists of organized sets of instructions for controlling the computer.
•  Some programs exist for the computers use,to help it manage its own tasks and devices.
• Other programs exist for the user, and enable the computer to perform tasks for us.such as creating documents.

Data:   

• Data consists of raw facts,which the computer can manipulate and process into information that is useful to people.
• Computerized data is digital,meaning that it has been reduced to digits or numbers.The computer stores and reads all data as numbers.
• Although computers use data in digital form,they convert data into forms that people can understand.such as text,numerals,sounds,images etc.    

User:

• People are the computers operators or users.
• Some types of computers can operate without much intervention from people,but personal computers are designed specifically for use by people.

                                                                                                             

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