Operating systems have many functions: A user interface is a program ... Pages 0 and 1 are now free, so Program C is allocated pages 0, 1 and 5. Key fact Paging is a method of managing memory.

To some, an operating system is a burden or waste of resources, like those working on embedded systems and other low-power applications. To others it’s necessary, abstracting away hardware ...

Many companies find that an operating system becomes the key driver of performance and can persuade both investors and prospective employees that your business is the right one for them.