the logic chip can also be a 4081, 4077 or a 4001.
I understand that Andrew F is a fan of "Lunetta Synths".
The module takes two input signals and divides them down by /2, /4, /8 & /16.
It also ring modulates the two signals and all of their divisions (similar to the ring mods in the Korg MS-20 and ARP Odyssey). All of these signals can then be mixed to create the output waveform.
This is a early video of one in action with some Serge gear:
There is a Euro version of this and I think Andrew F of NLC is still selling DIY PCBs for this module.
Below are some videos of the Divine CMOS with a Phenol from Kilpatrick.
I'm dividing the harmonics from VCOs 1 & 2.