Define Simplex, Half Duplex and Full Duplex?

What are Data Transmission Modes?

There are following three modes to transmit data from one device to another:-

• Simplex
• Half Duplex
• Full Duplex

Simplex Mode:-


In simplex mode, It is mode of communication between two devices.   The flow of data is unidirectional between devices i.e the communication take place in one direction. In it one can receive and other can transmit. In simplex mode the flow of data is unidirectional then it is rarely used for data communication. 


Example:-

• Monitor
• Keyboard

Half Duplex Mode:-

In Half duplex mode, It is mode of communication between two devices. The flow of data is bidirectional between devices but not at same the time i.e each can receive and transmit data but not at the same time. Thus in half duplex mode we can send and receive data in a line but not at same time.

Example:-

• Walkie-Talkie

Full Duplex Mode:-

In Full duplex mode, It is mode of communication between two devices. The flow of data is bidirectional between devices and at the same time i.e each can receive and transmit data at the same time. Use of full duplex mode increase the efficiency of communication. 

Example:-

• Telephone