Symbol 5315 from IEC 60417 - Title/Meaning: Two-level signal Function/description: To indicate a two-level signal, for example a binary signal.
Additional information: 
Published in: Supplement G, 1985
Own work using: iso.org/obp/graphics/grs/f751c2d1-d6be-4eb8-992e-47fb3057421f 200.png
Vectorization:  Mrmw