Updated: 10/17/2017 by Computer Hope

A signal may refer to any of the following:

1. In electronics, a signal is an electrical pulse that is used as a method of transmitting data.

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2. When referring to communications, a signal is an indication that a device is capable of reaching the destination.

3. Signals are software interrupts that are used for inter-process communication in UNIX and UNIX-like operating systems such as Linux. See our Linux signals overview for further information on signals.

Data signal, Digital signal, Electronics terms, PM, Pulse, Relay, Repeater