NOR
If we take our AND function and invert each "input" through the use of “normally-closed” contacts, we will end up with a NOR function:
This means I 0.0 MUST NOT BE AT STATUS”1” NOR MUST I 0.1 BE AT STATUS “1” FOR Q 10.0 TO BE AT STATUS “1”. To make it easier for we will now show you two “truth” tables, one with the “INPUTS” & “OUTPUTS” shown.
