Signal

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Signaling, or a signal, may mean:

Scientific concepts

In information theory, a signal is a flow of information that can be represented as a mathematical function.
In computer science, a signal is an event transmitted between computational processes.
In economics, a signaling is a subtle means of conveying information.
In telecommunication, signaling is a part of some communication protocols.

Proper names

Signal (toothpaste), a brand of toothpaste;
Signal paper, a discontinued brand of carbonless copy paper;
Signal (band), a Bulgarian rock band;
Signal (subscription service), a service of Data Broadcasting Corporation that provided real-time stock quotes;
Radio stations Signal 1 and Signal 2;
Signal (newspaper), a German Wehrmacht propaganda newspaper during World War II.

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)).

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