Signal

From Free net encyclopedia

Signalling or signal may mean:

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Communications

• Signalling (telecommunication) is a part of some communication protocols;
• An electromagnetic transmission intercepted by an antenna, such as television or radio
• A traffic signal or railway signal for the control of traffic;
• Distress signal;
• Smoke signal;
• signals by flags or beacons:
  • Semaphore (communication)
  • Beacon
  • International maritime signal flags, using the International Code of Signals

See also: Category:Early telecommunications

Scientific concepts

• A signal (information theory) is a flow of information;
• Signal analysis and signal processing are collections of techniques used to extract information from signals.
• A signal (computing) is an event (a message, a data structure) transmitted between computational processes;
• Signals (biology) are electrochemical activity in an organism;

Names

• Signal (band), a Bulgarian rock band;
• Signal (magazine);
• Signal paper, a discontinued brand of carbonless copy paper;
• Signal programming language;
• Signal (toothpaste);
• Signal 1 and Signal 2 radio stations;
• Signal (subscription service), service that provided real-time stock quotes;
• Signaal (now Thales Nederland), a Netherlands based defence company.

Other

• Any implicit, subtle, or disguised message, in situations such as:
  • Partnership card games (see signal (bridge)),
  • Coaches and players in team sports,
  • Animal courtship rituals,
  • Signaling (economics).
• Signals and slots, a software design pattern

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ar:إشارة da:Signal de:Signal fr:Signal ja:信号 nl:signaal es:señal pl:Sygnał