Automata and Formal Languages - II advances from regular and context-free languages to the full computational power of Turing machines, completing the hierarchy of formal languages and automata. Students examine deep structural properties of context-free languages through ambiguity analysis, parsing algorithms, and equivalence proofs between computational models. The introduction of Turing machines marks a pivotal transition to universal computation, where students explore both deterministic and nondeterministic models that define the limits of algorithmic solvability. Through pumping lemmas and equivalence demonstrations, learners develop proof techniques essential for establishing language properties and computational boundaries. This part synthesizes theoretical computer science foundations, connecting automata theory to computability, complexity theory, and the philosophical question of what can be computed.