The discipline that is concerned with the study of the processes that interact with data and can be represented as data in various forms of programs is referred to as computer science. It enables the use of algorithms for storing, manipulating and communicating digital information. The umbrella field of computer science includes the study of theories of computation and the practice of designing software systems. It is classified into various theoretical and practical disciplines, which include computational complexity theory, computer graphics, programming language theory, computer programming, as well as human-computer interaction. This textbook presents the complex subject of computer science in the most comprehensible and easy to understand language. The various sub-fields of computer science along with technological progress that have future implications are glanced at in this textbook. For all those who are interested in this field, this book can prove to be an essential guide.