Communication and Data Transmission Modes

A computer network is a logical or physical interconnection between two or more computers such that they could communicate with each other. The process of transferring data between computers is known as data communication. The data and information can be transmitted over significant distances through computer network. The communication of data and information over significant distances is known as telecommunication.

Data Transmission Modes

There are three modes for transmitting data from one device to another.They are as follows:

1. Simplex

The transmission of data can take place in only one direction in a simplex. The simplex device can send only or receive only. The transmission of data through radios, televisions etc are examples of simplex.

2. Half Duplex

Data can be transmitted in both directions, but only one at a time in half duplex. A half duplex device can alternately send and receive data. The transmission of data through walkie-talkie is an example of half duplex.

3. Full Duplex

A full duplex device can transmit data in both directions at a time. It improves the efficiency as it can transmit data in both directions at a time. The transmission of data through telephones is an example of full duplex.