CD-ROM -- Abbreviation for compact disc - read only memory. A CD-Rom is a storage media used to store information such as programs, data, and audio files.

Central Processing Unit (CPU) -- the brain of the computer that stores or houses the motherboard, memory chips and other system hardware.

Chat Room -- any web address where two or more users can get together and exchange comments in real time. Most chat rooms have a particular theme, but it is not required.

Cookie -- web sites send cookies to your browser so that the site is customized based on your previous actions on that site. Depending on the type of cookie used and the browser's settings, the browser may accept or not accept the cookie, and the cookie is usually set to expire after a specified amount of time. Cookies do not read your hard drive, but they can be used to gather information about the user.

Cursor -- the blinking icon on the screen.

Cyberspace -- cyberspace is used to describe the whole range of information resources available through computer networks. This term was coined to refer to the vast expanses of the Internet. Internet users are said to be in cyberspace when they go online.