We have great pleasure in bringing out two books entitled "MATLAB Part A: Tutorial" and "MATLAB Part B: Programs with sample Run Output" for diploma/Engineering. This book is designed for comprehensively covering all basic topics relevant to the subject. Each and every topic has been explained in a very simple language. Part A is concerned with the basic concept of MATRIX LAB. It deals with the MATLAB Environment along with the help feature, file types, constants and variables declaration, expressions, input/output statements, 1D array, 2D arrays, plots, control structures and few practice programs Part B is concerned with the programming code, which covers all the programs along with the description, algorithm and sample run output obtained after executing in MATLAB R2007b software environment.We have tried our best to make the subject as clear as possible by giving sample run output for easy glancing. It is hoped that these two books will be an immense use to teachers and students of polytechnics, engineering and also for self-learners.In writing these books, we have consulted many books, references and the literature in order to make the book more useful to the learners. We are indebted to these authors and publishers.We are very much thankful to all well-wishers for continuous support and encouragement. Any suggestions and comments for improvement in the future editions will be appreciated.