Bob Blick wrote:
>> Why "about once per second"? I don't see the clock specified anywhere.
>
> Default clock is 4MHz, so that's 1 cycle per microsecond, and an
> "if(!--i)" loop with i as an integer takes probably 12 cycles. So "about
> 1 second" is more like "about .768432 second"

Thanks for the explanation!

The part that confused me is that I did not expect "int" to be 16 bits long.

Vitaliy 

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