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duplex
(redirected from duplexes)

   Also found in: Dictionary/thesaurus, Financial, Wikipedia, Hutchinson 0.03 sec.
duplex
1. US and Canadian a duplex apartment or house
2. Chemistry a double-stranded region in a nucleic acid molecule
3. Machinery having pairs of components of independent but identical function
4. Electronics permitting the transmission of simultaneous signals in both directions in a radio, telecommunications, or computer channel

duplex [′dü‚pleks]
(engineering)
Consisting of two parts working together or in a similar fashion.
(graphic arts)
The technique of recording on roll microfilm the front and back image of a document in a single exposure.

(communications)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://cit.ac.nz/smac/dc100www/dc_014.htm.


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The wait is worth it, for these duplexes represent exceptional space in an exceptional building," says Elaine Schweninger, broker with Insignia Douglas Elliman.
The school, located a tortuous 58 miles northeast of Redding, is unique for its teacherage - a low-cost house - and duplexes available for rent to teachers and other district employees.
Backed by the companies functional knockdown guarantee, at least one of the kit's three Dicer-Substrate RNAi duplexes will deliver a 70% knockdown of the target mRNA when greater than 90% transfection efficiency, and greater than 90% knockdown with positive control is demonstrated.
 
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