Device Service Routines
Device Service Routines
By Prof S Raman

An interrupt handler, also known as an Interrupt Service Routine (ISR), is a callback subroutine in microcontroller firmware, operating system or device driver whose execution is triggered by the reception of an interrupt. Interrupt handlers have a multitude of functions, which vary based on the reason the interrupt was generated and the speed at which the interrupt handler completes its task.

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