Beginner
Embedded Systems & IoT
Q12 / 100
What is "polling" in embedded systems, and how does it differ from using interrupts?
Correct! Well done.
Incorrect.
The correct answer is A) Polling repeatedly checks the status of a device or input in a loop; interrupts notify the processor immediately when an event occurs, without constant checking
A
Correct Answer
Polling repeatedly checks the status of a device or input in a loop; interrupts notify the processor immediately when an event occurs, without constant checking
Explanation
Polling consumes CPU cycles even when nothing has changed, while interrupts let the CPU do other work (or sleep) until an event occurs, often improving efficiency and responsiveness.
Progress
12/100