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Word Explanation

A high-level programming language designed by Dennis Ritchie at AT&T Bell Labs, in the 1970s. C was developed to allow UNIX to run on a variety of computers. C is becoming popular as an alternative to assembly language for some uses, and can be compiled into machine language for almost all computers.

C Programming Language

The C programming language (often, just "C") is a general-purpose, procedural, imperative computer programming language developed in the early 1970s by Dennis Ritchie for use on the Unix operating system. The first major program written in C was the UNIX operating system. It has since spread to many other operating systems. Although originally designed as a systems programming language, C has proved to be a powerful and flexible language that can be used for a variety of applications, from business programs to engineering. C is a particularly popular language for personal computer programmers because it is relatively small -- it requires less memory than other languages.

C shell

(csh). A command line interpreter shell and script language for UNIX.


Pronounced "c sharp." A new programming language from Microsoft, it was created so that programmers can make a variety of applications – from system level applications to high level business objects – for Microsoft’s .NET platform. Microsoft sees C# as a way to overcome productivity issues it sees as coming from languages such as C and C++.


C# is an object-oriented programming language developed by Microsoft as part of their .NET initiative, and later approved as a standard by ECMA and ISO. C# has a procedural, object oriented syntax based on C++ that includes aspects of several other programming languages (most notably Delphi, Visual Basic, and Java) with a particular emphasis on simplification (fewer symbolic requirements than C++, fewer decorative requirements than Java).


Chuckle and Grin.


Cut and Paste. Deleting a block of material (text or graphics, or both) from one place and moving it to another place. The expression is taken from production room layout, where originally cutting and pasting was done by hand.


An object-oriented version of C created by Bjarne Stroustrup at AT&T Bell Laboratories in 1986. In C, "C++" means "add 1 to C." C++ is the basis of the Java language.


C++, originally named "C with Classes, is a high-level programming language developed by Bjarne Stroustrup at Bell Labs. C++ adds object-oriented features to its predecessor, C. C++ is a statically-typed free-form multi-paradigm language supporting procedural programming, data abstraction, object-oriented programming, and generic programming. C++ is one of the most popular programming languages. The C++ programming language standard was ratified in 1998 as ISO/IEC 14882:1998, and the current version of which is the 2003 version, ISO/IEC 14882:2003. A new version of the standard (known informally as C++0x) is being developed.

C-RIMM: Continuity-RIMM

Continuity-RIMM (C-RIMM) is a special module used to fill any unused RIMM slots (because there cannot be any unused RIMM slots on a motherboard). It is basically a RIMM module without any memory chips.

C/I: Carrier-to-Interference ratio

Carrier-to-Interference ratio (C/I) is the ratio of power in an RF carrier to the interference power in the channel.

C/N: Carrier-to-Noise ratio

Carrier-to-Noise ratio (C/N) is the ratio of power in an RF carrier to the noise power in the channel. Carrier-to-Noise ratio indicates the difference in amplitude between the desired radio frequency (RF) carrier and the noise in a portion of the spectrum.


Client/server. A method of networking in which a client machine sends a request to a server machine, which provides files, database searches, and other services.


Command and Control. This is a military term. Command and control systems are management information systems that help monitor and control operations; for example, the computer systems that control nuclear weapons.


The primary hard disk in a PC.


Compression Active. A modem status signal indicated by a light on the modem, which means that the data sent will be compressed.

CAAD: Computer Aided Architectural Desig

Computer Aided Architectural Design (CAAD) software programs are the repository of accurate and comprehensive records of buildings and are used by architects and architectural companies. In a more general sense, CAAD also refers to the use of any computational technique in the field of architectural design other than by means of architecture-specific software. For example, software which is specifically developed for the computer animation industry (e.g. Maya and 3DStudio Max), is also used in architectural design.


A flexible wire or bundle of wires, usually metal (glass or silica in fiber-optic cable), insulated with plastic or rubber, and having connectors on the ends. Some kinds of cable, especially coaxial cable and fiber-optics cable, are used in electronics and computer networking.


Cable is the physical transmission medium of a group of metallic conductors or optical fibers that are bound together and wrapped in a protective cover, and insulation between individual conductors/fibers and for the entire group.

cable modem

A cable modem is an external device that hooks up to your computer and instead of getting an internet connection through your telephone wire (or another system), you get a connection through your cable network (same place your cable TV connection comes from). Cable modems translate radio frequency (RF) signals to and from the cable plant into Internet Protocol (IP), the communications protocol spoken by all computers connected to the Internet. Cable modems are designed to take advantage of the broadband cable infrastructure enabling peak connection speeds over 100 times faster than traditional dial-up connections.

Cable Modem

Cable modem provides access of computers to network over cable TV lines. Most cable modems supply a 10 Mbps Ethernet connection for the home LAN. Cable modem achieve higher access speed to the World Wide Web than phone lines using dial up modem or even ADSL modem. The actual performance of a cable modem Internet connection can vary depending on the utilization of the shared cable line in that neighborhood, but typical data rates range from 300 Kbps to 1500 Kbps.


A temporary storage area for frequently-accessed or recently-accessed data. Having certain data stored in cache speeds up the operation of the computer. There are two kinds of cache: internal (or memory cache) and external (or disk cache). Internal cache is built into the CPU, and external cache is on the motherboard. When an item is called for, the computer first checks the internal cache, then the external cache, and finally the slower, main storage. A cache hit (accessing data from a cache) takes much less time than retrieving information from the main memory; the cache has high-speed memory chips. The cache may also be used as a temporary storage area for data that will be written to disk when the computer is idle.


a storage device that is high-speed and can be used as either a main memory or as an independent high-speed storage device.


Cashe is a high-speed storage mechanism. It can be either a reserved section of main memory (memory cache) or an independent high-speed storage device (disk cache). A memory cache, also known as a cache store or RAM cache, is a portion of memory made of high-speed static RAM (SRAM). Memory caching is effective because most programs access the same data or instructions over and over. By keeping as much of this information as possible in SRAM, the computer avoids accessing the slower DRAM.


Caches come in many types, but they all work the same way: they store information where you can get to it fast. A Web browser cache stores the pages, graphics, sounds, and URLs of online places you visit on your hard drive; that way, when you go back to the page, everything doesn't have to be loaded all over again. Since disk access is much faster than Internet access, this speeds things up.

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