Been fooling around with this issue for 2 days
and found that with some brands of these displays
they wont work with the default 74ls174 shift register
and diode - resistor AND gate, but do work fine with a real
AND gate like a 7408.
Must be just a bit level critical.
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Been fooling around with this issue for 2 days
and found that with some brands of these displays
they wont work with the default 74ls174 shift register
and diode - resistor AND gate, but do work fine with a real
AND gate like a 7408.
Must be just a bit level critical.