Answer Posted / abdul quadir khumani

Let, we have two systems A & B

Half Duplex = in this type of communication both can work as
receiver and transmitter. but when A is acting as a
transmitter then B must be working as a receiver.
and when B is acting as a transmitter then A must be working
as a receiver.
Eg. Wireless used by police.


Full Duplex = in this type of communication, A and B can
work as a transmitter and receiver together
Eg. all Telephones and Mobile Phones

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