what is the shut down?
<answer> To shut down a computer is to remove power from a computer's main components in a controlled way. <context> Shutdown (computing) To shut down or power off a computer is to remove power from a computer's main components in a controlled way. After a computer is shut down, main components such as CPUs, RAM modules and hard disk drives are powered down, although some internal components, such as an internal clock, may retain power.