Computer mouses can be classified according the number of the buttons (one, two, three or multi-key), the mechanism of tracking (mechanical, optical/laser, 3D or tactile) and the type of connectivity...
When it comes down to the mouse itself, there are three general types. A one-button mouse (there is only one button on the mouse, and it acts as a left-click by default), a two button mouse (the left...
Optical Mouse
All mice have moving parts. There is no such thing as a computer mouse not having moving parts. And before you pop off (or mouth off or whatever you want to call it), the "buttons"...