Hi All,
I am finally getting around to soldering up a pixie tube thermometer
that I bread boarded quite a while back. It uses a PIC and two
SN7414N's. On the bread board I have 1k resistors in series from the
output pins of the PIC to the input pins of the SN74141Ns. Usually I am
using shift registers but with a two digit thermometer I am coming
directly off of the PIC pins. I can't seem to remember why I put the
series resistors in there. Are they required?
Forgetfully yours,
Jonathan
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