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Encyclopedia > Signal
Look up signal, signaling in Wiktionary, the free dictionary.


Signal, signals or signalling may refer to: Wikipedia does not have an article with this exact name. ... Wiktionary (from wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ...

Scientific concepts

In the fields of communications, signal processing, and in electrical engineering more generally, a signal is any time-varying quantity. ... Signal processing is the processing, amplification and interpretation of signals, and deals with the analysis and manipulation of signals. ... It has been suggested that this article or section be merged into signal transduction. ... Signals in Biology refer to an electric quantity (voltage or current or field strength) whose modulation represents coded information about the biological source from which it comes, and are also known as Biopotentials. ...


A signal is an asynchronous event transmitted between one process and another. ... Signal programming is often used in the same sense as Event-driven programming. ... Signals and slots is a concept introduced in Qt by the moc. ...


Traffic lights will sometimes differ where there are several lanes of traffic. ... A signal is a mechanical or electrical device that indicates to train drivers or engineers information about the state of the line ahead, and therefore whether he or she must stop or may proceed, or instructions on what speed the train may go. ... This article or section does not adequately cite its references or sources. ... This page discusses Beacons, fires designed to attract attention. ... The system of international maritime signal flags is a way of representing individual letters of the alphabet in signals to or from ships. ... The International Code of Signals (INTERCO) is a signal code to be used by merchant and naval vessels to communicate important messages about the state of a vessel and the intent of its master or commander when there are language barriers. ... Military communications, or Signals, is a field of military activities, tactics and equipment dealing with communications. ... Military communications are links between battlefield units, including connections to a higher command or home country. ... Within evolutionary biology, signalling theory refers to the scientific theory around how organisms signal their condition to others. ... A distress signal is an internationally recognized means of obtaining help by using a radio, displaying a visual object or making noise from a distance. ... A smoke signal is a form of visual communication used over a long distance, developed both in the Americas and in China. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...


A Bulgarian rock band, most popular in the 1970s and 80s. ... Signals is the ninth studio album by the Canadian rock band Rush, released in 1982 (see 1982 in music). ... Signal Signal was a magazine published by the German Third Reich from 1940 through 1945. ... Signal is a toothpasteproduced by Unilever company. ... Signal One is an Independent Local Radio station broadcasting from studios in Shelton, Stoke on Trent to Staffordshire and Cheshire on 96. ... Signal 2 is a British Independent Local Radio station. ... Thales Nederland B.V. (formerly Signaal) is a subsidiary of Thales Group involved primarily in naval defence systems (sensors, radars and infrared systems). ... McLean Group of Companies is collective of companies owned by the McLean Family in Vancouver, British Columbia, Canada. ...


  Results from FactBites:
Signal (electrical engineering) - Wikipedia, the free encyclopedia (973 words)
Signals are often scalar-valued functions of time (waveforms), but may be vector valued and may be functions of any other relevant independent variable.
It is remarkably useful to analyze the frequency spectrum of a signal.
For instance, if a signal is passed through an LTI system, the frequency spectrum of the resulting output signal is the product of the frequency spectrum of the original input signal and the frequency response of the system.
Define signal - a definition from Whatis.com (296 words)
The simplest form of signal is a direct current (DC) that is switched on and off; this is the principle by which the early telegraph worked.
Except for DC signals such as telegraph and baseband, all signal carriers have a definable frequency or frequencies.
Signals also have a property called wavelength, which is inversely proportional to the frequency.
  More results at FactBites »



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