The lamp is OFF. It stays dark!
Gate by gate
- NOT B → NOT OFF = ON
- A OR NOT B → ON OR ON = ON
- (A OR NOT B) AND C → ON AND OFF = OFF
The same circuit in Python
Python has the same three gates built in: and, or and not. ON is True and OFF is False.
A = True
B = False
C = False
lamp = (A or not B) and C
print("Is the lamp on?", lamp)When you run it, it prints:
Is the lamp on? False
Try it: change one of the switches from True to False (or the other way round) and run the code again. Can you find a switch that changes the lamp?