Push Down Automata ( PDA ) | One Shot | TOC BTech 3rd Year

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Push Down Automata (PDA) | One Shot | TOC BTech 3rd Year

Sachin Bhardwaaj (Instagram)
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Theory of Computation (TOC) – BTech 3rd Year
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This ONE SHOT lecture on Push Down Automata (PDA) is designed for BTech 3rd Year CSE/IT students studying Theory of Computation (TOC). This complete session covers PDA definition, components, stack operations, DPDA & NDPDA, acceptance modes (empty stack & final state), PDA construction, PDA examples, CFG conversion, and CFL concepts. The lecture includes theory, examples, and exam-focused problem solving in a single, comprehensive video.

This lecture is especially useful for students of RGPV, AKTU, VTU, GTU, JNTU, SPPU, Anna University and other state technical universities. The explanation is clear, structured, and exam-focused, making it perfect for TOC Unit 4 preparation, revision, and university exam practice.

📘 This PDA One Shot Covers:

Push Down Automata (Definition & Need)
Components of PDA
Deterministic PDA (DPDA)
Non-Deterministic PDA (NDPDA)
Acceptance by Empty Stack
Acceptance by Final State
PDA Construction for:
— aⁿbⁿ
— Palindromes
— Balanced Parentheses
— L = {0ⁿ1ⁿ2ⁿ}
CFG Basics & Definitions
Context Free Languages (CFL)
Ambiguous Grammars
Simplification of CFG
CNF (Chomsky Normal Form)
GNF (Greibach Normal Form)
Conversion: PDA → CFG
Conversion: CFG → PDA

This Video Is Helpful For:

BTech 3rd Year – CSE / IT / AIML / DS students
Theory of Computation Unit 4 full revision
Push Down Automata numericals
Context Free Grammar & CFL
CFG → PDA & PDA → CFG conversion
University exam and GATE preparation

Push Down Automata is a core automata topic, essential for understanding compilers, syntax analysis, parsing techniques, and computational models.

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