In this chapter we are going to study two models of computations: finite state machines and stack machines.
Model of computation is akin to the language you are using to describe the solution to a problem. Typically, a problem that is really hard to solve correctly in one model of computation can be close to trivial in another. This is the reason programmers who are knowledgeable about many different models of computations can be more productive. They solve problems in the model of computation that is most suitable and then they implement the solution with the tools they have at their disposal. ...
