Duplex pumping engine
(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] |