CONVERGENCE

The ability of the three electron beams (red, blue and green) in a CRT monitor to meet at a single point and produce one dot.  If a monitor is mis-converging, the viewer will notice shadows of blue or red around any white images.

CONNECTIVITY

The ability to use an electronic network to send and receive information between any locations, devices or busness services.

CD

Acronym for compact disc - a flat, round optical medium made from polycarbonate, with one or more metal layers, capable of storing digital information. Developed by Philips and Sony in 1982, the CD remains the standard physical medium for commercial audio recordings. It is capable of storing up to 700 megabyte of digital data or 80 minutes of audio.  Once data is burnt to a CD, data cannot changed or erased and further data cannot be added.  CD’s are read by laser. 

CODECS

Codecs are any type of device or program capable of performing encoding and decoding on a digital data stream or signal. MP3 and WMA are examples of codecs.

CATV LINES

A broadband communications technology in which multiple television channels, as well as audio and data signals may be transmitted either one way or bidirectionally through a fibre/coaxial distribution system to a single or multiple specific locations.

CSS

An acronym for Cascading Style Sheets - an open standard developed by the World Wide Web Consortium (W3C) which allows designers to describe how documents are presented on screen. The rules defined in a style sheet are read in sequence, cascading like a waterfall from the top down (first to last).   www.w3.org/Style/CSS

CONTENT WRITER/EDITOR

Someone who is responsible for the text, images, sounds, and videos that are found on a website.

CMYK

Short for Cyan, Magenta, Yellow & Key (Black), commonly referred to as process colour or four colour. The CMYK model works by partially or entirely masking certain colours on the typically white background. Such a model is called subtractive because inks “subtract” brightness from white.  CMYK should always be used for printing.

COMPUTER OPERATING SYSTEMS

The purpose of an operating system is to organise and control hardware and software so that the device it lives in behaves in a flexible but predictable way. All desktop computers have operating systems. The most common are the Windows family of operating systems developed by Microsoft, the Macintosh operating systems developed by Apple and the UNIX family of operating systems (developed by a whole history of individuals, corporations and collaborators). There are many other operating systems available for special-purpose applications, including specialisations for mainframes, robotics, manufacturing and real-time control systems.

CALIBRATION

The aim of colour calibration is to measure or adjust the colour response of a device (input or output) to establish a known relationship to a standard colour space. The device that is to be calibrated is sometimes known as calibration source; the colour space that serves as a standard is sometimes known as calibration target.

DESKTOP

A desktop computer is a personal computer (PC) in a form intended for regular use at a single location, as opposed to a laptop which is considerably smaller and designed to be mobile.

DEFAULT

A default refers to a setting or assigned to a device,  computer program or software application outside of user intervention. Such settings are also called presets, especially for electronic devices. Default values are generally intended to make a device  usable “out of the box”. A common setting, or at least a usable setting, is typically assigned.

DVD

Acronym for Digital Versatile Disc or Digital Video Disc - the DVD is an optical disc storage media format. Úsed for the storage of video and data and offers more than six times the storage of a CD.                                                                               The variations of the DVD describes the way data is stored on the discs:

• DVD-ROM (can only be read and not written)
• DVD-R & DVD+R (can be written to once and then function as a DVD-ROM)
• DVD-RAM, DVD-RW and DVD+RW (hold data that can be erased and re-written multiple times)
• DVD-Video and DVD-Audio (properly formatted and structured for video and audio respectively)

DOWNLOAD

To transfer (data or programs) from a server or host computer to one’s own computer or device.

DOMAIN NAME

A unique address identifying each site on the Internet, usually of two or more segments separated by full stops.
 

DNS SERVER

The Domain Name Server resolves the name of the Web site typed into the location field of the browser with the IP address of the server that will send the requested information from that Web site.

DIGITAL MEDIA

Refers to any type of information in digital format including computer-generated text, graphics and animations, as well as photographic images.  The following are examples of digital media:

mobile phone

compact discs

digital video

digital tv

e-bok

internet

world wide web

DREAMWEAVER

Adobe Dreamweaver is a web development application originally created by Macromedia and now owned by Adobe Systems.

DSL

The term domain-specific language (DSL) is a programming language or specific language dedicated to a particular problem domain, a particular problem representation technique, and/or a particular solution technique. The concept isn’t new - special-purpose programming language and all kinds of modelling/specification languages have always existed, but the term has become more popular due to the rise of domain-specific modelling. Domain-specific languages are 4GL (fourth generation programming language) programming languages.

DATABASE DEVELOPER

Database developers are responsible for planning, implementing, and configuring database systems, including the design of the structures used to store and relate data, as well as the forms and queries used as part of the overall system. Database developers are usually proficient with one or more database software tools, such as Oracle or Microsoft SQL Server, and with one or more database query languages, such as SQL or MySQL. Database developers should be able to communicate effectively with other technical personnel, as well as with users or other staff who may have little or no technical background.

DYNAMICALLY GENERATED CONTENT

Website content that is generated by various script including:   

-  asp (Active Server Page). This is an HTML page that includes one or more scripts processed on a Microsoft Web server before the page is sent to the user. 

-  php (hypertext preprocessor)