signal-flow graph

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signal-flow graph [′sig·nəl ¦flō ′graf]

(systems engineering)

An abbreviated block diagram in which small circles, called nodes, represent variables of the system, and the nodes are connected by lines, called branches, which represent one-way signal multipliers; an arrow on the line indicates direction of signal flow, and a letter near the arrow indicates the multiplication factor. Also known as flow graph.

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