28 August 2011

Basic Elements of a Communication System


The following are the basic requirements for working of a communication system.

1. The sender (source) who creates the message to be transmitted
2. A medium that carries the message
3. The receiver (sink) who receives the message

In data communication four basic terms are frequently used.

They are:

Data : A collection of facts in raw forms that become information after processing.

Signals : Electric or electromagnetic encoding of data.

Signaling : Propagation of signals across a communication medium.

Transmission : Communication of data achieved by the processing of signals.