Yeah it looks like most of the stuff here just uses digital logic. When comparators first came out, I really liked the ability to store a hex value in such a small space. I knew ram was possible but I had a hard time getting over the short distances between comparators.
Edit: I built a newer version on the student server with the help of a few guys(Sensys and another guy i cant remember his name.) It can read and write. I'm debugging a cascade read and erase. Timing can be tricky.
Edit: I built a newer version on the student server with the help of a few guys(Sensys and another guy i cant remember his name.) It can read and write. I'm debugging a cascade read and erase. Timing can be tricky.