This document summarizes the history and types of computer mice. It discusses that the mouse was named because it resembled a real mouse with its cord acting as a tail. Douglas Engelbart invented the first mouse in 1968, which was a small wooden block on wheels with a long cable. Other mice developed include the mechanical mouse with a rolling ball, optical and laser mice that use light sensors, inertial mice that detect movement without a surface, 3D mice that provide multiple degrees of freedom, and tactile mice that provide haptic feedback. The document envisions future innovations for computer mice.