Hello friends:
I need to generate tones of multifrequency DTMF and not with himself to
find circuits specialized in stores (of the references that I have),
reason why I have thought to generate them with pic 16F84.
Somebody knows like?
They have some routine that can facilitate or knows to me where to
obtain it? They have bought some in stores that make international
shipments and they can give the data me of  integrated and the direction
of the store?

Anticipated thanks and greetings
                    Jose Antonio Gracia