Abstract: A digitizer/stylus combination comprises a digitizer board and a stylus, thereby the stylus operating on the digitizer board and generating a corresponding image on a screen of a personal computer. The stylus has an LED (light emitting diode) disposed thereon and emits infrared light which includes a series of light spots. The digitizer board has a pair of reflectors disposed in two adjacent sides thereof, a pair of focusing lenses disposed opposite to the reflectors for focusing the light from the reflectors and a pair of CCD image receivers disposed behind the focusing lenses respectively for receiving an X beam and Y beam emitted from a light spot, thereby obtaining a real position of a light spot. The stylus further comprises two keys for application software use.