Sept 29, 2019 - I am surprised that no one has commented about a slight quirk going on with the display. Notice that when transitioning from 6 to 7 that 8 is briefly shown. Turns out that the sequencer outputs 6 and 7 are both high at the same time for a brief moment and the display diode matrix has all leds active for that short time. This might actually turn out to be a bonus as it might assist with writing to a register much like the Cardboard Computer - IO. IO's sequencer had the same effect and came in handy.
I spent the better part of this afternoon wiring the Light Logic Sequencer to the diode display from the IO project. The display counts from 1 through 7 for this circuit and loops back to 1. Not bad considering only diodes, resistors and caps are used.