Why is it important to call GPIO.cleanup() at the end of a Raspberry Pi program controlling multiple LEDs?

hard📝 Conceptual Q10 of 15

Raspberry Pi - LED and Button Projects

AIt automatically saves the LED pattern to a file.

BIt resets all GPIO pins to a safe state to prevent unexpected behavior.

CIt speeds up the program execution.

DIt increases the brightness of the LEDs.

Step-by-Step Solution

Solution:

Step 1: Understand GPIO.cleanup() purpose
GPIO.cleanup() resets all GPIO pins used by the program to inputs, preventing them from staying on or causing issues after the program ends.
Step 2: Analyze options
Only It resets all GPIO pins to a safe state to prevent unexpected behavior. correctly describes this safety feature. Other options are unrelated to cleanup().
Final Answer:
It resets all GPIO pins to a safe state to prevent unexpected behavior. -> Option B
Quick Check:
cleanup() resets pins safely = It resets all GPIO pins to a safe state to prevent unexpected behavior. [OK]

Quick Trick: Always call GPIO.cleanup() to reset pins safely [OK]

Common Mistakes:

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