A nought or one, used to represent an on or off state in a digital computer. The smallest unit of data in a digital system. A transmission system with sufficient bandwidth to carry high quality, full-motion video. Contrasts with Narrowband . A form of communication where one party communicates one way with many other parties, which all receive the same information.
Common examples are radio and television broadcasts.
A discrete unit used by a digital computer, consisting usually of 8 bits . Image and sound data may require more than one byte to store each element of the image or sound, depending upon the quality. A system whereby a signal is encrypted to ensure that only subscribers can receive the channel or programme. See also pay TV . The merging of television, telecommunications and computing into one seamless delivery system.