A Computing Mouse is a pointing device which adds up as a part of the computer. It detects motion that is two-dimensional on a surface. This motion is translated to a pointer on the display screen which moves and facilitates the user to control graphical user interface. The most common feature of the mouse is: two primary buttons and a scroll wheel, which also sometimes is used as a third button. Douglas Engelbart invented the first computing mouse in 1960's. It was named "Mouse" because of its shape that included a cord, attached to its rear part which looked like a common mouse.
There are different variants of Computer Mouse.Most common are:
1. Mechanical Mouse: It is the most common version of the computing mouse consisting of a scroll wheel, ball and two buttons.
2. Tactical Mice: It was introduced by Logitech in 2000 that came with an "actuator" that would vibrate the mouse and augment user-interface with a tactical feedback.
3. Laser and Optical Mice: It makes use of LEDs (light-emitting diodes) and photodiodes to identify the movement on the surface rather than using an internal mechanism. Laser diodes are used for better precision. Some of these are battery powered which flash LED and glow according to its movement. Other variants are: Gaming mice, Tactile mice and Ergonomic mice.