SW executing under control of an OS will be interrupted. Explain what is essential about genuine interrupts. Are interrupts needed? How can a user see from the code, where interrupts will occur, why...

SW executing under control of an OS will be interrupted. Explain what is essential about

genuine interrupts. Are interrupts needed? How can a user see from the code, where

interrupts will occur, why they arise, how long they last, and how often they happen?