Mouse

A mouse is a small object or device that you roll on a flat surface to control the movement of the cursor or pointer on a display screen. The name is derived from the animal it resembles with the cord or wire as its tail.

There are three basic types of mouse:

1. Mechanical – Has a rubber or metal ball underneath that is flexible to any direction. A mechanical sensor tracks down the direction the ball is rolled to in order to move the pointer on the screen accordingly.
2. Optomechanical – Similar to mechanical, but uses an optical sensor instead.
3. Optical – Uses laser to detect the mouse’s movements. It must move on a special mat with a grid that serves as a guide. It functions better than the mechanical and optomechanical in terms of speed and preciseness but is also more expensive.

The Original Mouse

The mouse was invented by Douglas Engelbart of Stanford Research Center in 1963 for the purpose of decreasing the extensive use of keyboard in navigating through the computer. It is most especially useful in graphical user interface wherein the user can simply point and click on an object using the mouse to open or control a program, hence the term point-and-click programs. Moreover, the mouse is useful in the graphic programs as it can be used as a pen, pencil or paintbrush to draw.

Cordless Mouse

The mouse may either have a cord or none. Cordless mouse communicates with the computer through infrared and radio waves. It is more expensive but allows the user to move freely and work in a farther distance from where it might be connected.

All information Available Online.

Original Mouse: http://www.entique.com.au/logitech_cordless_mouse.jpg

Cordless Mouse: http://cache.gizmodo.com/assets/resources/2007/10/first_mouse_3.jpg