This book Provides a balanced, realisltic pictures that communicates the dynamics of computer science by presenting topics in a historical perspective in which past developments, the current state of the art, and directions of research are discussed. This book can be used for a graduate course in computer science, combining useful mathematics with applications in robotics and computer graphics. It is also suitable for self-study in the continued education of professionals in the fields requiring geometric a modeling, such as robotics , computer vision graphics and computer games. The book contains all the material needed for a good course on Theory of Computation and Complexity. Contents: Computer and Its Peripherals; Internet and Networking; Computer Communication System; Logic Gates; Modelling.