TAFL | Unit-1 | Lecture-2 | Basic Terms: Symbol, Alphabet, String, Formal Language | AKTU B.Tech CSE
Автор: CS Pathshala | Vishvendra Chaudhary
Загружено: 2026-02-11
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🎓 Welcome to CS Pathshala!
📘 Lecture 2 – Unit 1 (TAFL)
Basic Terminology – Symbol, Alphabet, String & Formal Languages
In this lecture, we cover the most important basic terminology of Theory of Computation. These concepts are the foundation for understanding DFA, NFA, Regular Expressions, Grammar, and Turing Machine.
🔹 In this lecture, we discuss:
✅ What is a Symbol?
✅ What is an Alphabet (Σ)?
✅ What is a String? (Length of string, empty string ε)
✅ What is a Language?
✅ What are Formal Languages?
✅ Important notations used in exams
📌 This lecture is very important because every automata problem is based on these basic terms.
📚 Language: Simple Hindi + English (Exam Oriented Explanation)
🎯 Helpful for AKTU University Exams, GATE & NET Preparation
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