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| Today you can get the impression that computers are running several programs simultaneously. This is called multitasking, and is more common to use the second term. In fact, the CPU executes instructions of a program and then after a short period of time, switch to a second program and executes some of his instructions. This creates the illusion that they are running several programs simultaneously, dividing the CPU time between programs. This is similar to the film that is formed by a rapid succession of frames. The operating system is the program that usually controls the allocation of time. The computer comes with simultaneous processing of more than one CPU, giving rise to multiprocessing. |
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