> You need a storage oscilloscope, typically known these days > as a "digital storage oscilloscope" or DSO. The waveform is > then stored digitally an will form a stable display on the screen PC soundcard makes a passable 'scope / logic analyser, thread not so long ago about this [EE] Advice on pics and IR control ? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist