Pointing devices & Functions br Mouse : small handy device br Trackball : it is a variation of mouse br pointing Stick : it is pointing device like a pencil eraser br joystick : pointing vertical stick br Touch pad : we slide on its surface to move the cursor br Touch Screen : video display screen . br Light pen : light sensitive stylus br Digitizing graphic tablets : Digitizing tablet convert drawings n photos into digital form. br Pen-based Systems : pen is used to input the data br Basics of Information Technology br Chapter No.