Slide 1Fall 2006Costas Busch - RPI1 A Universal Turing Machine Slide 2 Fall 2006Costas Busch - RPI2 Turing Machines are hardwired they execute only one program A limitation…

Slide 1Fall 2006Costas Busch - RPI1 Turing Machines Slide 2 Fall 2006Costas Busch - RPI2 The Language Hierarchy Regular Languages Context-Free Languages ? ? Slide 3 Fall…

Slide 1Fall 2006Costas Busch - RPI1 Decidable Languages Slide 2 Fall 2006Costas Busch - RPI2 Recall that: A language is Turing-Acceptable if there is a Turing machine that…

Slide 1 Fall 2006Costas Busch - RPI1 Turing’s Thesis Slide 2 Fall 2006Costas Busch - RPI2 Turing’s thesis (1930): Any computation carried out by mechanical means can…

Slide 1 Costas Busch - RPI1 Pushdown Automata PDAs Slide 2 Costas Busch - RPI2 Pushdown Automaton -- PDA Input String Stack States Slide 3 Costas Busch - RPI3 Initial Stack…

Slide 1 Costas Busch - RPI1 Standard Representations of Regular Languages Regular Languages DFAs NFAs Regular Expressions Regular Grammars Slide 2 Costas Busch - RPI2 When…

Slide 1 Fall 2005Costas Busch - RPI1 Context-Free Languages Slide 2 Fall 2005Costas Busch - RPI2 Regular Languages Slide 3 Fall 2005Costas Busch - RPI3 Regular Languages…

Sift on Fall 2006 Costas Busch - RPI 1 Deterministic Finite Automaton (DFA) Input Tape âAcceptâ or âRejectâ String Finite Automaton Output Fall 2006 Costas Busch - RPI…