Components of Data Communication

This article about Components of Data Communication.In previous articleData Communication i discussed about Data communication and its required characteristics.
Components of Data Communication
Data Communication has five components.

1. Message:-

It is information or data to be communicated.It can be text,picture,audio ,video etc.

2. Sender:-

sender is the device that sends the data message.It can be computer,telephone etc.

3. Reciever:-

The reciever is the device that recieves the message.It also can be computer,television,workstation etc.

4. Transmission medium:-

It is a physical path by which a message travels from sender to reciever.It can be twisted pair of wires,coxial cable & radio waves.

5. Protocol:-

It is the set of rules that govern data communication.it is agreement between devices.Without a protocol two devices may be connected but not communicated.Ex A person can speak French but it is not necessary he can understand Japanese.