Computer multitasking

From Saferpedia

In computers, multitasking is a method for several tasks called processes to share common resources, like the processor. For single core computers, at a given moment in time, only one process is running, meaning that only the tasks of a process are realized at that moment. Multitasking solved this issue scheduling an order of processing tasks at a given moment in time so there's a row of pending tasks according to priority. The act of redistributing the processor from one task to another is called context change. When it appears at a certain frequency it's realized the illusion of parallelism. Even for computers having more than one core (also called multiprocessor machines) the multitasking allows running more tasks than processors.