Data Cable

Used to transmit electronic information from a source to a destination. Used in computer and telecommunication systems the data cabling is either copper or fibre optic.

Decibel (dB)

A unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it to a reference level.

Dolby surround

A family of digital audio encoding technologies from Dolby used in commercial cinemas, home cinemas and video games. Introduced in the movie “Batman Returns” in 1992, Dolby Digital is the most widely used surround sound system in the world.


Acronym derived from digital video disc or digital versatile disc a DVD is a digital optical disc storage format. A DVD can be played in multiple types of players, including DVD players and computers. They offer higher storage capacity than compact discs while having...