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half-duplex

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half-duplex

[haf-doo-pleks, -dyoo-, hahf-]
–adjective
of or pertaining to the transmission of information in opposite directions but not simultaneously.
Compare full-duplex.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Computing Dictionary

half-duplex communications
(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)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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