Operating System (OS)
You can switch from one program to another on the desktop by clicking within the desired program's window or by clicking on its ...... button

None of above
Icon
Taskbar button
Folder

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Operating System (OS)
A Processor

None of these
is a device that performs a sequence of operations specified by instructions in memory.
is the device where information is stored
is typically characterized by interactive processing and time of the CPU
is a sequence of instructions

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