Signal programming (original) (raw)

Signal programming is used in the same sense as dataflow programming, and is similar to event-driven programming. The word signal is used instead of the word dataflow in documentation of such libraries as Qt, GTK+ and libsigc++. The time instants when the signal value (or dataflow value) changes correspond to events in event-driven programming. The signal flow of a program or a signal processing system is described graphically in a signal-flow graph or a data-flow diagram.