Mice

A mouce is a Primary Input divice (along with a Keyboard) for a Computer. It basically enables you use the computer.
 * __Mice__**


 * __How they work:__**

As you move the mouse across a surface, the ball moves too. Also inside the mouse are two rollers that roll against two sides of the moving ball. One roller tracks the horizontal motion of the mouse, and the other roller tracks the vertical motion.The motion of the two rollers is converted into electrical signals which is then sent to the computer through a cord. The software on the computer then converts these electrical signals into meaningful X and Y movement of the mouse cursor that you see on-screen.
 * __Mechanical mice (ball mice) :__**

Optical Mice are the most common computer mice in use today. An optical computer mouse works using optical technology and so don't require any moving parts. As you move an optical mouse over a surface, a small red LED (**L**ight-**E**mitting **D**iode) emits light onto a surface and reads the pattern or grid on that surface. The mouse converts this surface information into meaningful motion data which is sent to the computer. Optical mice have many advantages over mechanical mice, some of them include:
 * __Optical mice:__**
 * Less wear and lower chance of failure because there are no moving parts.
 * Dirt or dust can't get into the mouse and interfere with the sensors.
 * Smoother response due to increased tracking resolution.
 * Using a mouse pad isn't required, optical mice can work on normal surfaces such as a desk.

Laser technology has been the newest technology breakthrough in computer mice. The way in which a laser computer mouse works is similar to an optical mouse, but with better results. The laser workings inside of a laser mouse can deliver up to 20 times the performance of an optical mouse. This means more accurate tracking of motion, and smoother movement.
 * __Laser Mice:__**