• A pulse or other signal that initiates or activates a component, circuit, device, piece of equipment, system, action, process, or mechanism. Also, to so initiate or activate. 2. A trigger (1) which serves to initiate or activate instantaneously. 3. A trigger (1) which serves to terminate or stop an action, process, or mechanism. 4. A trigger (1) which serves to alternate between two operational or stable states, as occurs in a flip-flop.
  • In computers, a command or mechanism which initiates an action under specified conditions. For example, that which triggers the execution of an applet.

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