Advertisement

Polled Interrupt

What does Polled Interrupt mean?

A polled interrupt is a certain kind of input/output (I/O) interrupt that sends a message to the part of the computer that houses the I/O interface. The message states that a device is ready to be accessed without an identifying device.

Advertisement

Techopedia explains Polled Interrupt

An interrupt controller will poll all devices on a computer to determine which one sent out the request. Polled interrupt is an inefficient method of data transfer, spending much time checking the ready condition of a computer's devices.

An alternative that is more efficient is a vectored interrupt, which can send a signal that includes the identity of the device. All input/output in modern computers is done by interrupt-driven I/Os, which interrupt the process when they are ready to transfer data. The processor will perform other tasks while waiting for an interrupt.

Advertisement

Share this Term

  • Facebook
  • LinkedIn
  • Twitter

Survey: Why Is There Still a Gender Gap in Tech?

Do you work in the tech industry? Help us learn more about why the gender gap still exists in tech by taking this quick survey! Survey respondents will also be entered to win a $100 Amazon Gift Card!

Related Reading

Tags

Personal ComputersMicroprocessorsInput Devices

Trending Articles

Newest Articles

Go back to top