Class 12 Physics Communication Systems Introduction


We live in the world of information. Information needs to be communicated from one entity to another entity. This act of sending and receiving message from one place to another place, successfully, is called communication.

The word successful in the above definition, implies many things like

  • Common understanding by the sender and the receiver in interpreting the information
  • Quality in communication, which implies no addition, deletion or modification of the actual information

The growing needs of human beings in the field of communication imposed demands on

  • Complexity of information
  • Speed of transmission

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