Compilers are the mastermind of all applications. They are the place where applications are cooked with the help of programming languages. Knowledge of Compilers are not at all essential for a developer. But knowledge of Compilers makes you a perfect developer keeping all the rules to develop an application. All the notes related attached here are compiled in LaTeX, a world famous text formatting program, created by eminent computer scientist, Donald E Knuth, the author of the book "The art of computer programming".