A computer program that aids the process of transforming a source code language into another computer language is called compiler. It is used to create executable programs. Compiler design refers to the designing planning maintaining and creating computer languages by performing runtime organization verifying code syntax formatting outputs with respect to linkers and assemblers and by generating efficient object codes. This book provides comprehensive insights into the field of compiler design. It aims to shed light on some of the unexplored aspects of the subject. The text includes topics which provide indepth information about its techniques principles and tools. This textbook is an essential guide for both academicians and those who wish to pursue this discipline further.