Communication System:

• Communication system is the system that is involved to achieve the goal of information exchange.
• For example: exchange of voice signals between two telephones over the same network. Communication between a workstation and a server over a public telephone network.
• A communication system is one in which the states are connection/non-connections among the objects or units.
• In a particular extension communication system, there may be the different units of system: the source, the objective, teaching, evaluation and reconsideration.