Glossary of IT terms

Cache is the name given to memory used for speeding up operations. A web browser uses cache to store web pages that you have accessed in the past.

Sometimes you will go to a Web page you have viewed before and not be able to see the updated information.  This is often because the computer has cached the page. 

Clicking on the Refresh button on the browser will reload the page with the latest information.

Small programs transferred onto your computer when you access certain web sites. Cookies store information that is sent back to the web site when you access it.

You can set your browser security settings to block cookies or only allow cookies from certain websites.

The Central Processing Unit (CPU) is a device that controls the operations of all the hardware of the system.   It is also responsible for storing and retrieving information on other media.