Digital

Digital adj. of or using digits; operating data in the form of digits.

Richard Campbell, author of Media and Culture, defines digital communication as images, texts, and sounds that use pulses of electric current or flashes of laser lights and are converted (or encoded) into electronic signals represented as varied combinations of binary numbers, usually ones and zeroes; these signals are then reassembled (decoded) as a precise reproduction of a TV picture, a magazine acticle, or a telephone voice.

The following online source give more information. [1]