Mouse

Mouse is a device that control the moment of the cursor. Or pointer on a display screen it is a small object you can roll along a hard and flat surface. As you move the mouse the point on the display screen moves in the same direction. , mouse contain atleast 1 button and as more as 3

Light pen

Light pen is an input device that utilize a light sensitive detector to select object on display screen.

Speech input device

Speech or voice input devices convert a person s speech into digital form. These input devices, when combined with appropriate software, from voice recogination system.