Dans_PIC_Stuff wrote...

>How can I connect a scope to a resonator to measure it's actual =
frequency?
>I took a 16F84 with a 4MHz resonator to my Electronics AC circuits class=
 and
>tried testing it on one of their scopes but it didn't look too prety and=
 it
>made the PIC's program slow down dramatically.  Any tips?

Best thing to do is put the PIC into a simple program loop that toggles
an I/O pin every N clock cycles; then measure the frequency at this pin
and multiply by 4 * N to get the actual resonator frequency.

That way you avoid any kind of loading on the resonator or oscillator
that might influence the frequency.

Dave

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