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An advanced programming language used for programming advanced computer applications.


C Plus Plus
The same as C with added object-oriented functions.


C Sharp
A Microsoft version of C++ with added Java-like functions.


In web terms: A web browser or web server feature which stores copies of web pages on a computer's hard disk.


This refers to those crazy letters and numbers you have to decipher and type in when filling out a form on the web. It is a mechanism used to check whether or not you are human and is used to prevent spam.

Case Sensitive

A term used to describe if it is of importance to use upper or lower case letters.


Constant Bit Rate
CBR is an encoding method that maintains the same bit rate across the entire audio file.


CDDB is an online database of music information, contains artist name, CD name, and track name. By submitting the unique CD ID number to CDDB, a ripper, player or jukebox can retrieve the information associated with the CD.


Compact Disc
A digital audio format designed primary for audio distribution. Audio CDs contains uncompressed digital audio recorded at 44.1kHz.


Compact Disc Read Only Memory
An optimal disc that is used to store text, graphics and audio data for computer applications. The contents may not be changed or rewritten.


A software program that reads audio CDs and converts the data into WAV/ AIF file format for use with digital audio applications.


Compact Disc Rewritable
Similar in virtually all respects to a CD-R, except that a CD-RW disc can be written and erased many times.

CD-quality audio

Audio sampled at a sampling rate of 44.1kHz and a sampling precision of 16 bits. CD-quality audio is considered perfect human hearing because the amount of information it provides is enough that most people cannot hear anything missing from the audio.


Common Gateway Interface
A set of rules that describes how a CGI program communicates with a web server.


The folder (or directory) on a web server that stores CGI programs.

CGI Program

A small program that handles input and output from a web server. Often CGI programs are used for handling forms input or database queries.


An on-line text-based communication between Internet users.


The small buttons found on webpages and blogs that are links for subscribing to the RSS feed on that page or adding the page to a social bookmarking tool.


Microchips are tiny modules that store computer memory or provide logic circuitry for microprocessors and are commonly called chips. A microchip is made from a silicon dioxide or sapphire wafer which is cut to size and then etched with microscopic electrical circuits and electronic devices.

Cinema Now™

Record stream capture videos from Cinema Now™.


A codec for computer video.


Committed Information Rate
The minimum speed of the connection, most commonly used in frame relay circuits.

Citizen Journalist

Everyday people who engage in the process of gathering, reviewing, reporting, analyzing and distributing news and information without the being professional journalists.


A client is a computer system that accesses a (remote) service on another computer by some kind of network.


In web terms: The communication and separation of workload between a web client and a web server.


In web terms: A mouse click on a hyperlink element (such as text or picture) on a web page which creates an event such as taking a visitor to another web page or another part of the same page.

Clickthrough Rate

The number of times visitors click on a hyperlink (or advertisement) on a page, as a percentage of the number of times the page has been displayed.

Cloud / Cloud Computing

The Internet is sometimes referred to as the "Cloud". Cloud Computing refers to the recent trend of using the internet as an application platform, such as using an online version of a word processor as opposed to using a word processor that is installed on your computer's hard drive. It also refers to using the Internet as a service, like storing all of your pictures online at Flickr rather than keeping them on your hard drive.


Software or hardware used for encoding and decoding an audio signal.

Collective Intelligence

Collective intelligence describes how the grouping of opinions, observations, or impressions – if collected in a way that does not introduce bias -- leads to better information. For example, if 100 individuals are asked to estimate how many jelly beans are in a jar, the average of their guesses is likely to be highly accurate – and much more accurate than the group’s estimate would have been. Similarly, if a group of 10,000 movie-goers reviews a particular film, the group’s consensus on that movie is more likely to be reflective of its audience appeal than the comments of any one reviewer.
Collective intelligence is a fundamental strength of a site like Wikipedia: Millions of users who are continuously reviewing a large number of entries can be even more accurate than the small group of experts that edits traditional encyclopedias.

Communication Protocol

A standard (language and a set of rules) to allow computers to interact in a standard way. Examples are IP, FTP, and HTTP.


Websites that internet users can join to network, find information and interact with other members. They are often formed around particular areas of interest or to provide an online area where people can socialize "virtually".


The process of reducing the size of a data file.

Computer Virus

A computer program that can harm a computer by displaying messages, deleting files, or even destroying the computer's operating system.


Information from a web server, stored on your computer by your web browser. The purpose of a cookie is to provide information about your visit to the website for use by the server during a later visit.


Component of a speaker that produces sound. Also sometimes known as a driver.


Groups with common interests such as employees, investors, customers, partners.

Content Network

A group of Web sites that agree to show ads on their site, served by an ad network, in exchange for a share of the revenue generated by those ads. For example: Google AdSense or the Yahoo Publisher Network.

Content Page

A Web page designed to convey specific information to a user. Content pages are often found two or three clicks deep within a website. The defining characteristic of a content page is a reliance on text, graphics, and pictures that are designed to convey information on a given subject to users.


On the Web, a counter is a program that counts and typically displays how many people have visited an HTML page (usually the home page). Many sites include a counter, either as a matter of interest or to show that the site is popular.


The translation of data from one format to another.

Creative Commons

A nonprofit organization that promotes free public licenses to content.  Creative Commons provides specific conditions through which content can be reused, such as attributions, links or other notification methods to correctly identify the original source.  
For companies that want to maintain ownership of content – but also want to spread the content – Creative Commons Licensing is an effective approach. 


Act of taking a task traditionally performed by an employee or contractor, and outsourcing it to an undefined, generally large group of people or community in the form of an open call.


Cascading Style Sheets
A language that describes the way that HTML content is styled using fonts, colors, etc. This allows the content to be kept separate from the design so that the look of the site can be modified without changing the content.


The global network of interconnected computers and communication systems.

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