Pointing devices & Functions Mouse : small handy device Trackball : it is a variation of mouse pointing Stick : it is pointing device like a pencil eraser joystick : pointing vertical stick Touch pad : we slide on its surface to move the cursor Touch Screen : video display screen . Light pen : light sensitive stylus Digitizing / graphic tablets : Digitizing tablet convert drawings n photos into digital form. Pen-based Systems : pen is used to input the data Basics of Information Technology Chapter No.1 ICS PART 1
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