Help on Looser-Take-All / Winner-Take-All circuit

No way I am going to bother with various private forums. Usenet is quite satisfactory, thank you. Ask here, read here.

It sounds vaguely like a voting circuit, which is a key factor in high reliability systems built around redundant modules. The truth table for a three input component might be:

input output failed node id 000 0 0 = 00 (binary) 001 0 1 = 01 010 0 2 = 10 011 1 3 = 11 100 0 3 = 11 101 1 2 = 10 110 1 1 = 01 111 1 0 = 00

and all inputs other than 000 and 111 indicate a failure somewhere. You can build this out of three 2 input nands, and one

3 input nand. Analog methods can cut the component count. Implementing a failed node id may be useful in servicing.

Of course, quis custodes custodiet applies.

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Many thanks for your answer, I'll forward it to my friend, Bye ...

Antonio