In digital or binary logic (2-state logic), logic gates are used to decide the order or sequence of events in a control circuit.
In a ladder diagram, the _____________ _________________________ ____________ and either the ___________________ or ___________________ configuration of the PB switch contacts in the various rungs of the ladder diagram can be used to create the same sequence of events in digital or binary logic; hence the name ladder logic.
A) NO or NC; relative location
B) relative location; NO or NC
C) none of the answers
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Answer:B
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