4 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
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.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
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.
From WordNet r 1.6 [wn]:
duplex
adj 1: (used technically of a device or process) having two parts
"a duplex transaction"
2: (telecommunication) allowing communication in opposite
directions simultaneously; "duplex system"; "duplex
telephony"
n 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}]
From The Free On-line Dictionary of Computing (13 Mar 01) [foldoc]:
duplex
Communications with one channel in each
direction. If data can flow in both directions simultaneously
the communications is "{full-duplex}" else it is
"{half-duplex}".
A {simplex} channel can only carry one message at a time,
though it does not imply the channel is unidirectional.
The term duplex" was first used in wireless, telegraph, and
telephone communications, where duplex" circuits between
communicating terminals were capable of transmission in both
directions, and simplex" indicated transmission from a sender
to a reciever, or broadcast to several potential receivers.
Nearly all communications circuits used by computers are
two-way, so the distinction between simplex and duplex is
seldom made
(2000-03-30)
more about duplex
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