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(CPU) System interrupt am i right?
Hi I'm not too sure if I have the right meaning for an interruppt(CPU)
The CPU can only execute(in most cases) can only execute one instruction at any given time,but a system interrupt can pause or halt that "job or program" example if the user clicks off a browser and opens Itunes(System interrupt happens and pauses the Browser while Itunes is been used)
or am I way off and if so what is the proper meaning(in simpler terms)??
1 Answer
- tumbleweed_biffLv 77 years agoFavorite Answer
Essentially, that is it. It is something which hardware devices use to signal that they need attention, more commonly known as IRQ's. Originally, there were 8 IRQs, then 15 (one IRQ was used to cascade another 8 IRQs off of it). Typically, only one device could use one IRQ. Things have changed a bit since those days, but the idea is the same.