What is Polling?
A method in which the CPU repeatedly checks a peripheral's status to detect changes. Simple, but it consumes time and power even when nothing happens.
Field: Embedded Systems & Firmware
Polling in the explanations
When events are extremely frequent, as with high-speed networking, interrupt overhead piles up until processing cannot keep pace, so polling in batches becomes more efficient.
When is polling, in which the CPU repeatedly checks device …Polling is simple and predictable because checks happen at fixed intervals, but the CPU keeps checking even when nothing happens, wasting time and power.
What is the difference between polling and interrupts as wa…It is more efficient and responsive than polling, in which the CPU repeatedly checks device status.
Which CPU mechanism temporarily suspends the current task t…
Questions that mention Polling (3)
- When is polling, in which the CPU repeatedly checks device status instead of using interrupts, advantageous?
- What is the difference between polling and interrupts as ways to learn a peripheral's status?
- Which CPU mechanism temporarily suspends the current task to give priority to handling requests such as those from external devices?
Related terms
Interrupt Baud rate Bootloader Brown-out detection Contact bounce Debouncing Duty cycle GPIO Hard real-time I2C