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'[PIC]:PIC16F877 - five second beep.'
2001\01\18@103955 by Tom Mariner

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Is this a trick question? Out of the infinite ways of  bit banging and
hardware, I would choose to use the PWM.

On the other hand, I'll bet that there is something else going on in the
device or you would be using a 12 series. The deal is to write your code
with a mini-RTOS so that lots of things can happen "at once". I still would
fire up the PWM and let it do its task if a square wave is all that is
required. I'd still use the PWM for the sampling frequency if a more complex
audio waveform is needed.

Tom Mariner

{Original Message removed}

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