| A | ON | ON | off | off | Question Answered |
|---|---|---|---|---|---|
| B | ON | off | ON | off | |
| A AND B | ON | off | off | off | Is A and B on? |
| NOT (A IMPLIES B) | off | ON | off | off | Is A on and B off? |
| NOT (B IMPLIES A) | off | off | ON | off | Is B on and A off? |
| A NOR B | off | off | off | ON | Are both inputs off? |
| A | ON | ON | off | off | Is A on? |
| A XOR B | off | ON | ON | off | Are the inputs different? |
| NOT A | off | off | ON | ON | Is A off? |
| A XNOR B | ON | off | off | ON | Are the inputs the same? |
| B | ON | off | ON | off | Is B on? |
| NOT B | off | ON | off | ON | Is B off? |
| A NAND B | off | ON | ON | ON | Is either input off? |
| A IMPLIES B | ON | off | ON | ON | If A is on, is B also on? |
| B IMPLIES A | ON | ON | off | ON | If B is on, is A also on? |
| A OR B | ON | ON | ON | off | Is either input on? |
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