Frequently changing channels with a remote control could be considered a simple form of multitasking.
Multitasking, in a human context, is the method of doing multiple things simultaneously, such as editing a paper or responding to an email while following a teleconference.
In a multitasking environment, the entirety of the computer's resources (memory, files, CPU time) are assigned to different applications, and they are organized in such a way that each one of them gets a percentage according to specific priority policies.
To learn more about Multitasking, refer
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