As everyone knows, mouse is a pointing device mostly used with computers. It uses unique technology to choose a menu or function in computers. With the support of two dimensional motions, it performs efficiently. A mouse has been designed with a small case. The case has been designed in such a manner to hold it comfortably. The case has 2 or 3 buttons. Mostly mouse come with wheels which is essential for executing system dependent operations. The movements of the mouse will be displayed on the screen as a pointer which usually resembles like an arrow mark.

• Oldest Mouse

The very first mouse was introduced in the year 1963. The first mouse was not small as we get now. The size of the oldest mouse was very bulky. They functioned with the help of 2 gear wheels. These wheels were fixed perpendicular to each other. The movements or rotations of these wheels were translated as motions.

• Mechanical Mouse

Gradually the size of the mouse started to reduce. External wheels were replaced by balls. The balls will turn around. The devices have two rollers namely X and Y. These grippers hold the ball which becomes a base for the physical movement of the balls. This types of ball mouse was used in 1972. The device can rotate in any directions with the help of balls. Instead of ordinary balls inverted track balls were used in the midst of 1980s and 1990s. Two rollers were housed inside the ball mouse. Each roller was equipped with the device for horizontal as well as vertical motions. The signals will be sent from the mouse to the computer with the help of wire connections.

• Optical Mouse

A unique technology has been used nowadays in designing mouse. A light emitting diode and photodiode have been used for detecting the physical movement of the mouse. An optoelectronic sensor plays an essential role in the performance of optical mouse. Chip is used for processing the changes usually happening among the frames. Today's mouse manufacturers have designed mouse with the potential to process up to 1512 frames in one second. The major difference between mechanical and optical mouse is the detecting technology. Mechanical mouse use the balls to detect the movements optically. They were never bothered about the surface compatibility. But optical mouse use sensor light reflections to detect the motions.

• Laser Mouse

Mouse that functions with laser technology is known as 'laser mouse. This high tech mouse was introduced during the year 2000. Logitech has the credit as "first laser mouse introducer" in the market. Instead of LED technology, IR laser is used which enhances the images. This laser mouse has an advantage of high surface tracking power and lower energy consumption. You can use wireless laser mouse but they are comparatively a bit expensive.