On 05/01/2015 18:10, PICLIST wrote: > > On most chips a) is definitely wrong: an interupt is handled after > *each* instruction. You can of course argue that "within several instruct= ion > times" is included within "after each instruction", but I would consider > that argumentative. > > > I disagree. I think A is the correct answer for several reasons.=20 Define "several". For me this is the worst response! It's too vague. And w= e are talking of informathics. > B and C are wrong simply because you do not know the CPU clock speed Are not wrongs but need a context. > D is not correct because interrupts do not wait for the CPU to not be bus= y. Define "busy"! For me this can be a good response! Because the CPU will respond to the Interrupt ReQuest (IRQ) as fast as possible, so when not busy. The entire question is very badly spelled. In this case finding the right response is a pain. I hate this kind of test :-) N --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .