>The 83/84 is an
>eight pin cmos dip that takes your quadrature encoder signals and gives
>you a count up/count down or a pulse/direction to feed directly to your
>PIC or a 74193 or a 4516 counter.


Hello,

Siemens manufacture rotary encoders with this functionality built in. I only
know of one model: SFH-910. I am sure other manufacturers include this too.

Stuart.

__________________________________________________________________

 Stuart Allen                         Tel   : +49 (0)711 5858-501
 Development Engineer                 Fax   : +49 (0)711 5858-199
 Sony Stuttgart Technology Center
Stuttgarter Strasse 106
 D-70736 Fellbach, Germany
__________________________________________________________________