This document discusses compilers and programming languages. It covers the structure of compilers, how programming languages are evaluated, and the science of building compilers. Specific topics covered include the basic components of compilers like lexical analysis and input buffering, how tokens are specified and recognized, lexical analyzer generators, and finite automata.

1. Module- 03
Contents
 Introduction: Language Processors
 The structure of a compiler
 The evaluation of programming languages,
 The science of building compiler
 Applications of compiler technology
 Programming language basics
 Lexical Analysis: The role of lexical analyzer
 Input buffering
 Specifications of token
 Recognition of tokens
 Lexical analyzer generator
 Finite automate
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