If all your inputs are initially constrained to binary (0V = False, 10V = True), then it is possible to create all possible logic gates using nothing more than combinations of VCV MIX, VCV VCA, and constant CV of 10V (and/or -10V) from VCV 8VERT. All outputs can be constrained to 0V / 10V.
- NOT
- OR
- NOR
- AND
- NAND
- XOR
- XNOR
I posted those constructs at VCV Fundamental Constructs: Logic Gates
In more generic terms, the minimum set of requirements to create all the gates are a collection of
- Summing Mixers
- VCAs
- Inverters
- a single 10V constant CV source
If you have analog inputs, then you can easily convert them to binary using Comparators. I’ve got VCV Fundamental Comparators as well.