Output register
The output register is similar to any other register (like the A and B registers) except rather than displaying its contents in binary on 8 LEDs, it displays its contents in decimal on a 7-segment display. Doing that requires some complex logic; luckily there’s an easier way:
Videos
Schematic
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Data sheets
- 555 timer
- 74LS08 Quad AND gate
- 74LS107 Dual J/K flip-flop (substitute for 74LS76; check pinout!)
- 74LS139 Dual 2-to-4 line decoder/demultiplexer
- 74LS273 8-bit D register
- 28C16 16K EEPROM