MOUSE

A mouse is a pointing device. It si held in one hand and moved across a flat surface. Its movement and direction of movement is detected by two rotation wheels on the underside of mouse. Each wheel is connected to shaft encoder which emits electrical pulses for every movement of the wheels. When a user moves the mouse across the flat surface, the cursor of CRT screen also moves in the direction of mouse's movement. A mouse may have two or more buttons. Different types of mouse are:
i) Mechanical mouse
ii) Optical mouse
ii) wireless mouse