Digital TV uses digital transmissions to broadcast audio and video, as opposed to analogue transmissions in the more archaic form of television from decades past. It represents the biggest leap in the evolution of television technology since the advent of color televisions in the 1950s, offering superior quality, more variety and more accessibility than ever before.Digital TV enables the broadcasting of high-definition (HD) television formats that provide resolutions that are substantially greater than standard definition. It also gives us the ability to watch more than one program in the same channel bandwidth.