[ajb]

I thought I'd heard something like this before. From 2004: http://www.eetasia.com/ART_8800354714_499488_NT_92255b4a.HTM

That's a turbo decoder rather than a generic probability calculator, but it's doing probability calculations in the analog domain.

This sort of thing may make sense for error correction, but I don't think people will run general probability calculations on it. Too difficult to debug :-)

Though, I do wonder if they can simulate a neuron more efficiently than digital logic.