I've been asked to work with an Optical Encoder and a display with the
capability of updating the readings relatively fast.

Since I've never worked with an optical encoder, my 1st thought was to
use a PIC.  I was told that the logic may be too intense.  Is this
true?  Is there an interface to these things?  All I know is that I've
got two square waves that I have to count and determine which leads the
other.  My thought is that the speed may be the issue.

Any help would be greatly appreciated!  (assembly code would be
wonderful)

Any good links for sources of info available?  I don't want to re-invent
the wheel if I don't have to.



Jon