Answer: Logic Lights #13

The lamp is ON. It lights up!

Yellow wires carry power. Grey wires don’t.

Gate by gate

A AND B → ON AND OFF = OFF
NOT (A AND B) → NOT OFF = ON

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

lamp = not (A and B)
print("Is the lamp on?", lamp)

When you run it, it prints:

Is the lamp on? True

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?

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