A type of multiplexor that combines multiple channels onto a single transmission medium in such a way that all the individual channels can be simultaneously active. For example, ISPs use concentrators to combine their dial-up modem connections onto faster T-1 lines that connect to the Internet.
Concentrators are also used in local-area networks (LANs) to combine transmissions from a cluster of nodes. In this case, the concentrator is often called a hub or MAU.
Referring to an action that takes place only if a specific condition is met. Conditional expressions are one of the most important components of programming languages because they enable a program to act differently each time it is executed, depending on the input. Most programming languages use the word if for conditional expressions. For example, […]
- conditional access
Abbreviated as CA, in digital television broadcasting, conditional access is the term used to describe a system of allowing consumers access to only those services for which they have subscribed. A conditional access system using both scrambling and encryption to prevent unauthorized reception of services by those not paying for the service.
Same as forum, an area in a bulletin board or online service in which participants can meet to discuss a topic of common interest.
The way a system is set up, or the assortment of components that make up the system. Configuration can refer to either hardware or software, or the combination of both. For instance, a typical configuration for a PC consists of 32MB (megabytes) main memory, a floppy drive, a hard disk, a modem, a CD-ROM drive, […]
- configuration file
A file that contains configuration information for a particular program. When the program is executed, it consults the configuration file to see what parameters are in effect. The configuration file for DOS is called CONFIG.SYS. Older versions of the Windows operating system stores configuration information in files with a.INI extension. The two most important configuration […]