7-seg display never works for me:( Im flippin out. I always have this same problem with 7-segment-displays having only touched on theory stuff I don't know why this 7-seg display wont work. ive attached up probes and it shows all the right outputs. ive fiddled with common anode and cathode displays, I have used 7447N for the conversion. ive tried all combinations of EL EN BI and all I can get is it shows all segments lit up. most of the time I see current limiting resistors but im not sure how to apply them. there in nearly every example but nowhere is the theory for it. ive attached the multisim 11 file any help would be great. thanks. and if possible the theory behind any of it.