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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.
Definition of Communication Model. The word 'model' refers as representation of a process, and event or a situation. It is not a separate or independent method rather it is the representation of an existing object. The communication model is similarly a symbolic representation of the communication process. It does not show the details of a message rather it presents only those elements which are related to the object of sending a message.