hp41c Time module clone

[Monte Dalrymple]

The logic design is complete, as is the PC board design. I was able to fit everything on a board that is 23mm x 13.2mm, which will solder directly to the connector in a module housing. Before I proceed further, I need to put together a breadboard to verify that everything works (and fits in the FPGA I am using.) I hope to get around to this in the next couple of months. It's hard to simulate the logic because of the timescales involved, and this is why most of the verification will need to be done with a breadboard.