Half-duplex

Half-duplex What is the definition of half duplex?Is this system,$A$ give $x$ to $B$,then $B$ give $x$ to $C$,called half duplex?
What is the definition of half duplex?Is this system,$A$ give $x$ to $B$,then $B$ give $x$ to $C$,called half duplex?
What is half-duplex system?What does half-duplex data mean?What is half-duplex and full-duplex system?What is the example of half-duplex communicatio...