What a computer mouse does?

Answer 1

Mouse are used to point, select, search, close, for a file program, picture, music, open an icons, so you can run a program, highlight text so you can copy delete or change the format, basically this is the device that give the user a full control of the computer system, this is what makes the operating system an event driven system as well. Because each selection triggers another action, for example when you double click an image, you are telling the image displayer, I want to see this image, and the image displayer fetches the image and opens it on a window so you can see it.