The direction of Flow of Power, Signal, or Information - application: one-way, general
This file was derived from: IEEE 315-1975 (1993) 1.7.1.a.svg
(in English) (1993)  315-1975 - IEEE Standard American National Standard Canadian Standard Graphic Symbols for Electrical and Electronics Diagrams (Including Reference Designation Letters), IEEE, p. 12  DOI:  10.1109/IEEESTD.1993.93397. ISBN:  0738109479.
Michel Bakni