Signal

From Wikipedia, the free encyclopedia

Signal, signals or signalling may refer to:

[edit] Scientific concepts

• Signal (electrical engineering), a varying quantity that can carry information.
• Signal processing, the field of techniques used to extract information from signals
• Cell signaling, in biology, the system of communication that governs basic cellular activities and coordinates cell actions
• Signal (biology), an electrochemical communication activity in an organism

[edit] Computing

• Signal (computing), an event, message, or data structure transmitted between computational processes
• Signal programming, a variety of event-driven programming
• Signals and slots, a signal-driven software design pattern

[edit] Communications

• Signals used in various kinds of transport:
  • Traffic light
  • Railway signal
  • Semaphore
  • Beacon
  • International maritime signal flags, using the International Code of Signals
• Signals (military), a historical name for the military communications
• Signalling theory in biology, how organisms signal their state to others
• Distress signal
• Smoke signal (See also Category:Early telecommunications)
• Signalling (telecommunications), a part of some communication protocols

[edit] Names

• Signal (band), a Bulgarian rock band
• Signals (album), an album by progressive rock band Rush
• Signal (magazine)
• Signal (toothpaste)
• Signal 1 and Signal 2 radio stations
• Signaal (now Thales Nederland), a Netherlands based defence company
• Signal Systems, a company of the McLean Group of Companies

[edit] Other

• Any implicit, subtle, or disguised message, in situations such as:
  • Partnership card games (see signal (bridge))
  • Signalling (economics)
• Signals in legal citations
• Kent (game) a card game also known as Signal or Kemp