> why not setup the PWM to output a one second pulse

You still need to use a timer, in this case TMR2. It would work, after
some fiddling about, but it's an unconventional use of PWM

> the 20ns or longer reset pulse could be a simple 5 or 10 instruction
> delay loop

The instruction cycle time is 200ns, so a bsf and a few NOPs in series
will do the pulse. No need for a loop unless it's more than a few us

> Also the PIC could control the setting of the decimal point on the
> display. Correct?

Yes

Joe
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