What I want to do is build an early stage pc that ran like dos operating system. I know I can print my circuit out and iorn on copper clad and acid etch circuit and make in limited to few hundred transistors for all my components. but wonder how to link transistors to form latches into memory, and an ALU, shift registers, etc. How to programe simple operator system and map ask2 codes for a keyboard and basic math and to make a basic write tool like notepad.