IT Questions and Answers :)

Monday, June 3, 2019

What is IRQ?

What is IRQ?

  • Internal Response Query
  • Internal Request Queue
  • Interrupt Request
  • Increased Raise Quantity 
What is IRQ?



In a computer, an interrupt request is a hardware signal sent to the processor that temporarily stops a running program and allows a special program, an interrupt handler, to run instead. Hardware interrupts are used to handle events such as receiving data from a modem or network card, key presses, or mouse movements.


Such an input may be either "level sensitive" - the interrupt condition will persist as long as the input is active or "edge triggered" - an interrupt is signalled by a low-to-high or high-to-low transition on the input. Some processors have several interrupt request inputs allowing different priority interrupts



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