I always thought (naively) that analog are the big old machines with lots of wires and boards, and digital are the modern small lighter machines we see more in use today.
Then Golden Mask confirmed to me that my GM1+UK is analog, but it's compact and modern.
Somebody told me that analog can use "surface mount technology" which is smaller than the old analog boxes on older machines.
So when is a detector analog, when is it digital, and can they be hybrids?