Monday, December 26, 2011

Different types of communication systems

Simplexsimplex half duplex and full duplex communicaitons

In this type of communication, first device send data and second device receive it. Second device never send  any information to first device. Broadcast systems like FM radio work in this way.

Half Duplex

In this type of communication, when first device send data, second device receives it and when second devices send data, first device receives it. But both devices can’t send or receive data at the same time. This type of communication is using in "walkie-talkie".

Full Duplex

In this type of communication, first and second device can send and receive data simultaneously. Phones and mobile phones are using this type of communication.

Note: In Ethernet communication we can set both end half or full duplex depending up on the requirements. That is Ethernet can work on both mode.

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