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Glossary C- Chat
- This rather generic term has come to describe one of the more popular activities on the Internet. Using special software, Internet users can enter chat areas or "virtual spaces," where they can communicate in real time. While most chat software only lets users talk by typing, more advanced products assign avatars, 2D or 3D characters, to each participant. These avatars may even have expressions selected by the chatters. The most advanced products not only use avatars, but also let users with sound cards speak to each other.
- Client
- The customer side of a client/server setup. To confuse matters, when you log on to a server, the word client can refer to you, to your computer, or to the software running on your computer. For example, to download something from an ftp site, you use ftp client software.
- Client-server
- Two computer systems linked by a network or modem connection where the client computer uses resources by sending requests to the server computer.
- CMYK
- CMYK identifies the four colors used in traditional printing presses, and stands for, respectively, cyan, magenta, yellow, and black.
- CPU (central processing unit)
- The CPU--a highly complex silicon chip ranging from the size of a matchbook to the wallet-sized Intel Xeon--is your computer's brain, taking requests from applications and then processing, or executing, actions, a.k.a. operations. The faster your processor, the more operations it can execute per second. The more operations you have per second, the faster things happen in your applications; thus, games play more smoothly, and spreadsheets calculate more quickly. Sometimes the term CPU is also used to describe the whole box that contains the chip (along with the motherboard, expansion cards, disk drives, power supply, and so on). Both uses are widespread, but only the first is really accurate.
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