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The function of a computer's mouse is to:
1. A device that is moved along a flat surface to direct the on-screen pointer.
The mouse is an essential input device for computers that allows users to interact with graphical user interfaces by moving the pointer on the screen. By moving the mouse along a flat surface, users can control the position of the cursor on the screen, making it easier to navigate, select, and interact with various elements on the computer screen.
In summary, the primary function of a computer's mouse is to provide a user-friendly way to control and navigate the graphical user interface of a computer system by moving the on-screen pointer.