The 3d wheel of the mouse can enlarge and reduce the pictures in the window, which helps you to better see the overall layout and local details. The mouse is the external input device of the computer and the indicator of the vertical and horizontal coordinate positioning of the computer display system, so it is named because it looks like a mouse. Its standard name should be Mouse, and its English name is mouse. The use of the mouse is to make the operation of the computer simpler and faster, instead of the tedious instructions of the keyboard. The mouse was invented by Dr. douglas engelbart of the University of California, Berkeley in 1964.