What is Data Communication, its characteristics And Basic Elements

What is Data Communication, its characteristics And Basic Elements

Data communication is a process of transferring data electronically from one place to another. Data can be transferred by using different medium. Medium is a path through which data travel in different directions.Medium can be physical or digital.Different types of  communication are here Local or remote. Local communication will be when communication devices are in the same building or office whereas communication will be remote if communicating devices are in different places.

Data is collection of raw facts and figures. Data may be in the form of media. Media can be text, images, videos or animated objects.Data can be transferred by using electromagnetic waves.signals may be propagated across communication medium and this phenomena is called signaling.

Data Communication Features

1. Jitter

              Jitter is the the variation in arrival time of different data packets.Is is said to be uneven delay in arrival of audio video packets/message.It is uneven delay in arrival time of packets.There can be different delay time depend upon message or packet size.

2. Timeliness

The system should deliver data on time. Data become useless if data send after that time. There is a term called real time transmission of data in which data is send as it is produced.this called real time transmission of data.

3. Accuracy

The system must deliver data accurately. There must be strong checks that must stop the alteration of data packets.

4. Delivery

Data must be send to the receiver on time and it must be delivered properly.

Elements of Data Communication

There are four necessary elements a data communication system have which are Message, sender, receiver and medium.

1. Message

Message is the data or information to be communicated. It may consist of text, images, audios and videos.

2. Sender

It is the Person who sends message.It can be a computer, fax, telephone etc. The computer is usually used as sender in data communication system.Sender is also called source.

3. Receiver

Receiver is also called sink in networking terms. It can be any end device that is used to receive messages. It can be a computer, printer, fax machine or mobile phone.

4. Medium

Medium is well known as path we can also call it data communication path/medium. It is the path through which data travels across sender and receiver lines. It is also called as communication channel.

5. Protocol

These are set of rules governed across the internet to make communication secure and safe.It can be an agreement between communication devices.