[1] : The Free On-line Dictionary of Computing (27 SEP 03)

half-duplex
     
         hdx, from telegraphy 1. a type of
        communication channel using a single circuit which can carry
        data in either direction but not both directions at once.
     
        compare: simplex, full-duplex.
     
        2. an obsolete term for local echo.
     
        2001-07-21
     
     
see also:
telegraphy simplex full-duplex local echo 

Half-Duplex >> H Words
Half-Duplex, definition of term: Half-Duplex
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