Quote Originally Posted by dsicon View Post
but on 3 bcd sws there would be 1000 combinations
But I'm sure you only need 512 of them.

Yeah, I think reading all 3 BCD switches on 1 A/D might be a stretch.
But with each digit on different pins, 3 pins would be better than 7.
Then there's only 16 voltage possibilities per pin (10 used). Piece of cake for A/D.
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