The inspiration to start writing this book came my students of the books available in the market and prescribed syllabi for every course should coincide so as to nurture the students who entered the collage level from school level. This book fulfills both the requirements. This book helps the students of the courses B.Com, B.Sc , M.B.A and also the beginners who initiate in the field of information technology. I have made the book a well as the subject simple and understandable. It is written ina way such that it does not require any tutor. It is my true wish that each and every student should get benefit from this effort I have put in writing this book.
To get maximum benefit and thorough knowledge of the subject do not skip any topic. Books are not onlt important at the xamination point of view but also to gain indepth knowledge of the subject and use it as a stepping stone to grow your careet. I dedicate this book to my sincere students.
