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View Full Version : A question about an Operating System and the CPU



Ahlahn
11-05-2011, 07:07 PM
Hey guys,

My understanding of the relationship between the OS and the CPU is still a bit fuzzy- here's my question:

If the CPU is a processor, and an Operating System is a software, this means that the operating system must be executed by the CPU. If so, how exactly does it allow other programs to interface with the CPU if it's already hogging the CPU? (assuming we're in a single processor system).

Thanks.

_Aerospace_Eng_
11-06-2011, 02:46 PM
http://en.wikipedia.org/wiki/Preemption_(computing)

Mainly "Preemptive Multitasking".



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