COMPUTER MAINTENANCE AND REPAIR

1. INTRODUCTION TO COMPUTER REAPIR AND MAINTENANCE

Definition & Terms

 

What is a Computer?

A computer is an electronic device that takes in data and instructions (input), works with the data (processing), and produces information (output).

 

Basic Terms

 

Data refers to the raw facts that are fed to a computer.

Information is data that has been processed and can be used for decision making.

Data and Information can take either of the following formats:

•Text – These are number, characters or special symbols. They are used when preparing reports, letters, etc.

•Graphics – These are images. Used when preparing charts, graphs, pictures

•Multimedia – These are audio and video recordings that may or may not combine of text and graphics. 

 

Processing is the act of converting data into information.

A typical personal desk top computer