In computing, a mouse is a pointing device that functions by detecting two-dimensional motion relative to its supporting surface. Physically, a mouse consists of an object held under one of the user s hands, with one or more buttons.The mouse sometimes features other elements, such as wheels , which allow the user to perform various system-dependent operations, or extra buttons or features that can add more control or dimensional input. The mouse s motion typically translates into the motion of a pointer on a display, which allows for fine control of a graphical user interface.-　　　　　In computing, a mouse is a pointing device that functions by detecting two-dimensional motion relative to its supporting surface. Physically, a mouse consists of an object held under one of the user s hands, with one or more buttons.The mouse sometimes features other elements, such as　wheels , which allow the user to perform various system-dependent operations, or extra buttons or features that can add more control or dimensional input. The mouse s motion typically translates into the motion of a pointer on a display, which allows for fine control of a graphical user interface.