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Signaling, or signal, may mean:

Scientific concepts

• A signal (information theory), a flow of information that can be represented as a mathematical function;
• A signal (computing), an event (a message, a data structure) transmitted between computational processes;
• Signals and slots is software pattern implementation closely related to the Observer pattern.
• Signaling (economics) is a subtle means of conveying information;
• Signaling (telecommunication) is a part of some communication protocols;
• Signals (biology) are electrochemical activity in an organism;

Proper 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 of Data Broadcasting Corporation that provided real-time stock quotes;
• Signal musician, turkish musician and artist Alex Signal;
• Signal turkish phrase, turkish phrase for greetings Selam and Signal;

Other

• A traffic signal or railway signal for the control of traffic.
• In a partnership card game, a player's choice of card to play at a particular time, which gives information to a partner (see Signal (bridge)).
• A message: a thought or idea expressed briefly in a plain or secret language, prepared in a form suitable for transmission by any means of communication.
• A Distress signal is a Call for help (SOS) to attract attention to obtain emergency help or rescue.

• Disambiguation pages