Problems
![](figFSAModel2Alone.GIF)
- The astute among you (or knowledgable) might have noticed
that there are some FSAs that this type of system
might have problems with.
- The first problem has been called Exclusive Or. If you're
in S1 and get an a you should fail, but will go to S3.
- Similarly, you might have a problem if you can go from
one state to another, and then directly back. We've called
this the Backward Connection problem.
- Both of these problems can be remedied by the addition
of another net (resistant net) on the arc.