The subject of digital communications is considered to be one of the subjects that are difficult for students to study in foreign languages. For this reason, I found it to be necessary to write this book since Arabic language does not have such scientific books. This book is written by using a simple method, that avoids in most cases the complex mathematics, in which makes the reader to loose the meaning that stands behind this analysis. The illustrated material in this book covers all the material required for the 2-year colleges (intermediate-university colleges), but also covers the majority of the university material in the basic stage. In this book, the scientific terms are mentioned in the Arabic language as well as in the English one, in order to enable the university-students to know the corresponding terms in the English references. The partial analysis and proofs are written in some cases for the university students and not for the 2-year students."
Salem Iseed mentions in the preface, generally, the subjects that are illustrated in this book. Also shows that this book is written for both the university-students as well as the 2-year colleges (that are preparing for Alshaamel examinations in Jordan).