Synopsis I am extremely happy to place the first edition of the book on computer science before the esteemed readers. The present Volume presents a multidimensional view on different aspects of computer application in a unique simple, easy to understand language that enables a quicker grasp to the students and teachers of computer science. The book is useful for students appearing in B.A., B.Sc., B.Com, B.B.A., M.A., M.Sc., M.Com., M.B.A., C.A., C.S., and I.C.W.A. examinations. The bank employees will also find the book useful in their departmental examinations.