An exploration on lexical analysis

The word lexical in lexical analysis, its meaning is extracted from the word “lexeme”. Lexeme is an abstract unit of morphological analysis in linguistics. A lexical analyser is used in various applications like text editors, information retrieval system, pattern recognition programs and language compilers. But we limit our discussion in this paper to language compilers. Lexical analyser being the first phase of the compilation process it deals with the processing of input language. Discussion is also extended to multi-core environment.