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Difference between Simplex Transmission Modes and Half Duplex Transmission Modes

  • Last Updated : 19 Jul, 2021

Prerequisite – Transmission Modes in Computer Networks

1. Simplex Mode :

Simplex mode is as on a one-way street, the communication is unidirectional, as on a one-way street. In this, only one of the two devices on a link can transmit, the other can only receive. This mode is use the entire capacity of the channel to send data in one direction.

Example:-  keyboard and monitor.

2. Half-duplex mode:

Half duplex mode is when sender can send the data and also can receive the data but one at a time. It is two-way directional i.e bi-directional  communication but one at a time.

Example:- Walkie-Talkies.

Difference between Simplex Transmission Modes and Half Duplex Transmission Modes :

Sr.noSimplex ModeHalf-duplex mode
1. The sender can send the data but that sender can’t receive the data.The sender can send as well as receive the data but does one task at a time.
2.In simplex mode data flow is Unidirectional.In Half duplex data flow is two-directional but one at a time.
3.In this bandwidth utilization is maximum.In this there is less utilization of bandwidth during transmission.   
4.Simplex mode provides worst performance than full duplex mode. Half duplex mode provides less performance than full duplex mode. 
5.In this, one station is the transmitter and the other is the receiver. Here, information is one way, that is, it is only the transmitter that sends data or information.In this, two systems are connected by a point to point link to transmit and receive signal. Both ends can transmit signal but one at a time.
6.Keyboard and traditional monitors are example of simplex mode.Walkie-Talkies and Text message are example of half duplex mode.

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