I'm trying to re-plumb a nice proprietary case for continued use with arbitrary motherboards. But I've no clear idea what the meaning of the small circles (shown in red, here) at the juncture of the traces is, or of the # chars on the descriptors.
I thought the circle might simply mean negation, as it does in gate symbols, but I'm not really confident that that's true, and it still leaves me in the dark about the # that terminates some of the descriptors.
Searching the web hasn't helped.
[EDIT] Okay, someone else asked about the circles (229425), and now I know that they do mean negation. But I still don't understand the #s.
Best Answer
The default in logic circuits is that a high level (logic one) activates a function. The small circle denotes inversion, so we can have an external signal that is active low, which (when low) activates a function (that is still activated by the more-or-less theoretical signal after the circle, which is active high).
The fact that a signal is active low can be represented in various ways in the signal name, the # is one, and _ is another.
Don't be confused by the location of the symbol name, it denotes the external signal, not the internal signal after the inversion.