"Communications" refers to the electronic transfer of data. Digital communications means that data is transmitted as 0s and 1s. Analog communications includes nondigital forms of voice and video.
Computers can be "stand-alone" machines, meaning that they are not connected to anything else. Indeed, many students carry portable pc's on which they use word processing or spreadsheet programs to help them with their work. However, the communications component of the computer system vastly extends the range of a computer. Indeed, the range is so many orders of magnitude larger that comprehending it is difficult.
Communcations is defined as the electronic transfer of data or information from one place to another. Communications has two components: digital communications and analog communications.
Digital communications-digital, or data, communications consists of digital transmission-0s and 1s. This is the method of transmission by which computers communicate with each other.
Analog communications-Analog communications consists of nondigital forms of transmission, including voice and video. In the past, analog communications has been the method by which telephone, radio, television, and cable-TV have transmitted.
