Computer games are becoming popular choice for time passing in the field of entertainment. Not even kids, grown up men/women too nowadays almost addicted to computer games. Any computer game requires some devices to input the data and to give commands. These devices are called as game controllers. When a user gives input using game controllers, game program accepts it, processes it effectively and then produces output in the form of graphics and sound. The most commonly used game controllers are joystick and game pad. A joystick has a lever which the user can move to control the movement of a pointer. Joystick is the preferred choice in car racing and flying games. A game pad has a set of buttons which are known as action buttons and direction buttons. Gamepad can be controlled by using both the hands. Action buttons which are bigger in shape is used to control actions like increasing speed, stopping etc. For changing the direction, direction buttons are used. A game pad is also known as joypad or control pad.
