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/ PC Plus SuperCD (UK) 1995 March / PC Plus Super CD (Issue 101) (March 1995).iso / lrn_pc / sound / ligthpen.wav (.mp3) < prev    next >
Waveform Audio File Format  |  1993-09-30  |  409.3 KB  |  1 channel  |  22,050 sample rate  |  19 seconds
Transcription: When scanning the screen line by line, the scan beam passes below the light pen's tip. The light sensitive element detects the light pulse and sends it to the light pen controller. The controller matches this signal against the snap and scan voltages to calculate the light pen position on the screen.