Communication is the transfer of information from one place to another. The process of communication essentially involves the following three components:

  • Sender - the component from where the information is transferred.
  • Receiver - the component to which the information is transferred.
  • Medium - the component through which the information is transferred.

In our day-to-day lives, we come across various forms of communication.

As observed in the examples shown in Figure 1.1, every form of communication involves a sender, a receiver, and a medium connecting them.

The form of communication that is becoming popular these days is communication between computers (refer Figure 1.2). In this form of communication, the sender and receiver are both computers and the medium through which the information is transferred may be electromagnetic waves, cables or other such physical media.