UGS 303  Foundations of Logical Thought

Finite State Machine Project



A finite state machine (FSM) is a formal model of computation that is very useful for describing solutions to a large class of problems.  Here are some finite state machines that you use every day:


·       Vending machines

·       Traffic lights

·       Password checkers

·       Spelling checkers


We are going to build a finite state machine that checks for valid passwords (according to a set of rules that we’ll provide).


For this project, we’ll use JFLAP, an FSM simulation tool.  You can download JFLAP (it’s free) from: