Digital processing on image:

Describes a method of storing, processing and transmitting information through the use of distinct electronic or optical pulses that represent the binary digits 0 and 1. Digital transmission/switching technologies employ a sequence of discrete, distinct pulses to represent information, as opposed to the continuously variable analog signal. DS-0, DS-1,
Referring to communications techniques and procedures whereby information is encoded as binary language, as opposed analog representation of information in variable, but continuous, wave forms. Electronic mail: each Internet user can have his or her own address for electronic mail messaging. It is possible to exchange text, documents, graphics and multimedia messages like voice mail and video mail.
Digital describes electronic technology that generates, stores, and processes data in terms of two states: positive and non-positive. Positive is expressed or represented by the number 1 and non-positive by the number 0. Thus, data transmitted or stored with digital technology is expressed as a string of 0's and 1's. Each of these state digits is referred to as a bit (and a string of bits that a computer can address individually as a group is a byte).