Digital technogly is becoming a part of the world we cannot go without. almost every electronic machine or system uses some form of digital technology.

TV- The current signal for the terrestrial tv is not digital but for evrry other satilite or cable television system it is all run digitally. the whole of the UK is having a Digital tv take over in 2012 in which the old system will be shut down and be fully replaced by that of a digitally sent signal.The key difference between analog and digital technologies is that analog technologies record waveforms as they are, while digital technologies convert analog waveforms into sets of numbers, recording the numbers instead. When played back, the numbers are converted into a voltage stream that approximates the original analog wave.

CAMERA-Instead of exposing a photosensitive chemical known as film to a scene to create an imprinted image, most digital cameras use a charge-coupled device (CCD), an electronics instrument that creates a pixel map based on the electric charge generated when photons slam into a sensitive material. Als digital binoculars on the market using the same technology.

MUSIC-AAC, or Advanced Audio Coding, is another digital audio format which has seen huge popularity in the Internet age. It is a newer compression system, and is generally agreed upon as having a higher-quality sound at the same compression levels as MP3.