BCD with the BS2

bkirkby

I am putting together a project running 10 Nixie's from 1 BASIC Stamp 2 and am looking for a good resource to do this. I think I need to use BCDs to talk to five 74HC595s which will in turn control ten K155ID1s (SN74141), each controlling one Nixie tube. Am I on the right track with this? Also, just to quell some worries, how many outputs will I need to run one 74HC595?

Thanks in advance!

Ben

Mike Green

You need a minimum of 3 I/O pins. You can cascade all 5 74HC595s and use one SHIFTOUT statement to load up the 5 bytes of information, then use a single common load clock to transfer the data to the output register and the Nixies. There's no great advantage to handling the 5 74HC595s separately