Duplex

6 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Duplex \Du"plex\, a. [L., fr. duo two + plicare to fold. See
     {Two}, and {Complex}.]
     1. Double; twofold.
        [1913 Webster]
  
     2. (Computers) organized so that data may be transmitted in


        two opposite directions over the same channel; -- of
        communications channels, such as data transfer lines
        between computers.
        [PJC]
  
     {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.
  
     {half duplex} (Computers)
        (a) arranged so that the information may be transmitted in
            both directions, but only in one direction at a time;
            -- of communications channels between computers;
            contrasted with {full duplex(a)}.
        (b) arranged so that the information transmitted to the
            remote computer also appears on the local terminal; --
            of communications channels between computers;
            contrasted with {full duplex(b)}.
  
     {full duplex}, (Computers)
        (a) arranged so that the information may be transmitted in
            both directions simultaneously; -- of communications
            channels between computers; contrasted with {half
            duplex(a)}.
        (b) arranged so that the information transmitted to the
            remote computer does not appear on the local terminal;
            -- of communications channels between computers;
            contrasted with {half duplex(b)}.
            [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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.
     [Webster 1913 Suppl.]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  duplex \du"plex\, n. [See {Duplex}, a.]
     1. something which is duplex; -- used mostly in reference to
        a living unit, such as an apartment, in a building having
        two similar living units.
        [PJC]
  
     2. (Biology, Genetics) a double-stranded region in a nucleic
        acid molecule. See {deoxyribonucleic acid}.
        [PJC]

From WordNet (r) 2.0 [wn]:

  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"
       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 Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  49 Moby Thesaurus words for "duplex":
     Janus-like, ambidextrous, apartment house, bifacial, bifold,
     biform, bifurcated, bilateral, binary, binate, biparous,
     bipartisan, bipartite, bivalent, condominium, conduplicate,
     cooperative apartment house, dichotomous, disomatous, double,
     double-barreled, double-faced, duadic, dual, dualistic, duple,
     duplex house, duplicate, duplicated, dyadic, flats, geminate,
     geminated, high-rise apartment building, identical, matched,
     second, secondary, tenement, twain, twin, twinned, two, two-faced,
     two-level, two-ply, two-sided, two-story, twofold
  
  

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

  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)}.
       
          (2001-07-21)