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Ring signal — Parallax Forums

Ring signal

ArchiverArchiver Posts: 46,084
edited 2002-06-17 22:12 in General Discussion
What kind of signal must I generate with my BS2 to send to a PC's serial Ring
line so a VB program will generate the Ring interrupt? It appears to be more
than just a simple SPDT pushbutton switch from -12v to +12v.

Mark



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