@Demoman200(View Post) ah, these are blank dec to bin units, to use, place NSCN in the hole between NTCT and PTCT, which makes output=1, if there is no NSCN, output=0
these are not "chips" as per processing units, but just single input to coded output.
With intersecting lines of NTCT and PTCT, spark can be transferred from NTCT to PTCT (and prevented from transferring back the other way) by placing a dot of PSCN where they cross. The same applies for PTCT to NTCT, using a dot of NSCN.