The 74HCT85 is a high-speed 4-bit magnitude comparator that is expandable to almost any length. It features serial or parallel expansion without extra gating and has a standard output capability. It ...
[Agp.cooper] saw a vintage 4Kx4 bit RAM chip and decided that it needed a CPU design to match. The TTL design fits on two boards and has a functional front panel. This custom CPU project has a few ...