Wouter van Ooijen wrote: > > > 2 You think strobing a 7-seg is time critical? > > > > Indeed. You think it is not? > > Indeed. There are somne timing-related aspects that might matter, but it > does not matter whether the refreshing is done at 200 Hz or 10 kHz. No, the specific refresh rate doesn't matter (much), but the duty cycle has to be dead on. And the refresh rate must be stable, because any changes in frequency cause momentary changes in duty cycle as well. -- Dave Tweed -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist