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exists and is an alternate of . Making the world better, one answer at a time. If by IT you mean computer architecture, then the communication bus would be a physical path on the circuit board, that connects various components which passes electrical signals between each other. The nature of the signal is either on or off and the path is either serial or parallel in nature.
Models of communication are conceptual models used to explain the human communication process. The first major model for communication came in 1949 and was conceived by Claude Elwood Shannon and Warren Weaver for Bell Laboratories. Following the basic concept, communication is the process of sending and receiving messages or transferring information from one part (sender) to another (receiver).