On Nov 5, 2008, at 11:32 AM, Stefan Salewski wrote: > One question to the professional: > Are hidden power pins really useful today?
It depends on the design. Sometimes I do a board where all of the 74XX logic runs on 3.3V. In that case, explicit power is a distraction, so just connect the incoming power to a Vcc symbol and make a note. Other times, each individual chip has a resistor on its power pin to protect against radiation-induced latchup, so explicit power pins are essential. And VLSI design gets you into a bunch of other issues. gEDA is a flexible toolkit, not a one-size-fits-all solution. Hurray! John Doty Noqsi Aerospace, Ltd. http://www.noqsi.com/ [EMAIL PROTECTED] _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
