A nice aspect of the state machine concept is its compelling graphical representation in the form of state diagrams. In the modern Unified Modeling Language (UML 2.5) notation [3], states are ...

From a more abstract perspective, one may view hierarchical state machines as a meta-pattern, in that various structured uses become design patterns (behavioral patterns 3 ) in their own right. This ...

Now we’ll begin drawing the state diagram. This consists of the three circles corresponding to states A, B, and C. After drawing these, we write in the transitions that result from the inputs. Let’s ...