Communication
between two device called data flow. Data flow are three type.
i) simplex : in simplex mode the communication is unidirectional, as on
a one way sreet. Only one of the two device on a link can transmit
the other can only receive. Example – radio, keyboard, monitor.
ii)half
duplex : in half duplex, each station can both transmit and receive but not at the same time, when one device is sending the other can
only receive and vice versa. Example – walkies-talkies.
iii)
full duplex : in full duplex mode , both station can transmit and revive at a same time simultaneously. Mobile phone.
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