Data Communication

Description:

Data communication is a process of transferring data electronically from one place to another. Data can be transferred by using different medium. The basic components of data communication are as follows:
1) .Message . 
2)Sender .
3)Receiver .
4) Transmission Medium
5) Encoder and Decoder

1) Figure: Data Communication

1)  Message:

The message is the data or information to be communicated. It may consist of text. umber, picture, sound, video or a combination of these.


2) Sender:

Sender is the device that sends the message. It is also called source or tr sender can be a computer, fax machine or mobile phone etc. The computer is usually ansmitter The used as sender in data communication systems.

3). Receiver:

It is also called sink. The receiver capable to accept the message. The receiver can be a computer, printer, fax machinight or mobile phone etc. A computer is usually used as receiver in data communication.
4). Transmission Medium :

Transmission medium is the path through which the messages are transferred. It b used to carry messages from one place to another. It is also called communication channel The transmission medium is a physical cable or wireless connection.

5.) Encoder and Decoder:

The encoder is a device that converts digital signals in a form that can pass through a Amplitud transmission medium. The decoder is a device that converts the encoded signals into digital form. The receiver can understand the digital form of message. Sender and receiver cannot communicate successfully without encoder and decoder.