However... if one has only a paper schematic to work with while
debugging a board then the hidden nets don't tell you what voltage to
expect at specific pins so debugging becomes harder.
Stephen Meier wrote:
If one assumes that gnd and vcc are well defined and well known as in
the 74xx family removing them from the schematic makes the drawing
simpler.
However this isn't always the case.
Steve Meier
Wilbert Knol wrote:
Could someone explain why logic ICs must not have Vcc and GND pins?
I have never seen a good reason for this. What is wrong with having
Vcc and GND pins - like any other pin?
Wilbert.
