The study of cyclic codes: method. Manual for courses "Coding Theory and Information Protection", "Digital Signal Processing" by Salomatin S. B. is a unique publication that will become an indispensable assistant for students, graduate students and specialists in the field of information technology and telecommunications . In a world where information is becoming a primary resource, understanding the principles of data coding and protection is becoming especially important. Salomatin, known for its in-depth knowledge of coding theory, offers readers not only theoretical calculations, but also practical recommendations for the use of cyclic codes. These codes play a key role in ensuring the reliability of data transmission, which makes their study relevant for everyone who works with digital systems. The book presents many examples and tasks that will help readers consolidate their knowledge and apply them in practice. Who can be interested in this book? First of all, it is intended for students of technical universities studying courses on coding theory and digital signal processing . However, not only students will find useful information in it .. Information technology specialists, engineers and researchers working with data transmission systems will also appreciate the in-depth analysis and practical aspects presented in the manual. The age category of readers varies from senior students to professionals seeking to expand their knowledge and skills. The topics covered in the book cover a wide range of issues, from the basics of coding theory to the complex algorithms used in modern systems. Salomatin raises important aspects such as coding efficiency, data transfer reliability and error detection and correction techniques. These topics are not only relevant, but also critical in the context of rapid technology development and an increase in the amount of information transmitted. The author's style is distinguished by clarity of presentation and accessibility of the material. Salomatin masterfully combines theory with practical examples, making learning fun and productive. His previous works, such as "Coding Theory: Basics and Applications" and "Digital Signal Processing: From Theory to Practice", have also been praised by readers and professionals, which confirms his status as an expert in the field. The study of cyclic codes is not just a manual - it is a whole world in which readers are immersed, seeking to understand how information coding and protection systems work. It will help develop the critical thinking and analytical skills needed to solve tasks related to data processing and transmission. If you are looking for a quality source of information on coding theory, which will not only explain the basic principles, but also give the opportunity to apply them in practice, then this manual will become your reliable companion. Do not miss the chance to deepen your knowledge and become an expert in the field that determines the future of technology The book of Salomatin is the key to understanding the complex processes taking place in the world of digital data, and the opportunity to take a step forward in your career.