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Duplex - Dictionary Definition and Overview |
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Duplex : adj
1: (used technically of a device or process) having two parts;
"a duplex transaction"
2: allowing communication in opposite directions
simultaneously; "duplex system"; "duplex telephony"
(noun)
1: a house with two units sharing a common wall [syn: duplex
house, semidetached house]
2: an apartment having rooms on two floors that are connected
by a staircase [syn: duplex apartment]
Based on WordNet 2.0
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Duplex : \Du"plex\, v. t. [See Duplex, a.] (Teleg.)
To arrange, as a telegraph line, so that two messages may be
transmitted simultaneously; to equip with a duplex
telegraphic outfit.
Based on Webster's Revised Unabridged Dictionary
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Duplex : \Du"plex\, a. [L., fr. duo two _ plicare to fold. See
Two, and Complex.]
Double; twofold.
Duplex escapement, a peculiar kind of watch escapement, in
which the scape-wheel has two sets of teeth. See
Escapement.
Duplex lathe, one for turning off, screwing, and surfacing,
by means of two cutting tools, on opposite sides of the
piece operated upon.
Duplex pumping engine, a steam pump in which two steam
cylinders are placed side by side, one operating the
valves of the other.
Duplex querela [L., double complaint] (Eccl. Law), a
complaint in the nature of an appeal from the ordinary to
his immediate superior, as from a bishop to an archbishop.
--Mozley & W.
Duplex telegraphy, a system of telegraphy for sending two
messages over the same wire simultaneously.
Duplex watch, one with a duplex escapement.
Based on Webster's Revised Unabridged Dictionary
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Duplex :
Used to describe a communications channel
that can carry signals in both directions, in contrast to a
simplex channel which only ever carries a signal in one
direction.
If signals can only flow in one direction at a time the
communications is "{half-duplex", like a single-lane road with
traffic lights at each end. Walkie-talkies with a
"press-to-talk" button provide half-duplex communications.
If signals can flow in both directions simultaneously the
communications is "{full-duplex", like a normal two-lane
road. Telephones provide full-duplex communications.
The term "duplex" was first used in wireless, telegraph, and
telephone communications. Nearly all communications circuits
used by computers are two-way, so the term is seldom used.
http://www.cit.ac.nz/smac/dc100www/dc_014.htm)">(http://www.cit.ac.nz/smac/dc100www/dc_014.htm).
(2001-07-21)
Based on Webster's Revised Unabridged Dictionary (1913)
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