The book "Calculation of automatic systems with synchronous multiplying devices" by B. Guest is a fascinating and deep dive into the world of automation and modern technology. In this work, the author offers readers a unique look at the design and analysis of automatic systems that use synchronous multiplying devices. This topic is relevant not only for specialists in the field of engineering, but also for students, graduate students and everyone who is interested in modern technologies and their application in various industries. In. Guest, known for his work in automation and management, masterfully combines theoretical aspects with practical examples, which makes the book not only informative, but also practically useful. He shares his knowledge and experience, which allows readers not only to understand how synchronous multiplying devices work, but also to learn how to apply this knowledge in real projects. The book is filled with graphs, diagrams and illustrations that help to visualize complex concepts and make the learning process more fascinating. The main theme of the book is the calculation of automatic systems, which in the modern world is becoming increasingly important. With the rapid development of technology and automation, understanding the principles of synchronous multiple devices opens up new horizons for engineers and developers. The author examines various aspects of design, including the choice of components, their interaction and system optimization. This makes the book a valuable resource for those who want to deepen their knowledge in the field of automation and management. The book will be of interest not only to professional engineers and developers, but also to students of technical specialties who are looking for high-quality educational materials on this topic. It will be an excellent addition to the learning process, allowing students to better understand how to put theory into practice. Also, thanks to the available presentation language and logical structure, the book will be useful to those who are just starting their way in the world of automation. The topics raised in the book cover a wide range of issues related to the design and calculation of automatic systems. In. Guest focuses on the importance of accuracy of calculations and their impact on the efficiency of systems. He also discusses current trends in the field of automation, which makes the book relevant and timely. Readers will be able to learn about new technologies and methods that can be applied in their work. The author's style is distinguished by clarity and logical presentation, which makes it easy to perceive even the most complex concepts. In. Guest has already established himself as an author able to explain technical aspects in an accessible language. His other well-known works are also devoted to automation and management issues, and they are popular with professionals and students.[citation needed] If you are looking for a book that will help you understand the calculations of automatic systems and synchronous multiplying devices, “Calculation of automatic systems with synchronous multiplying devices” will become your reliable assistant. This book will not only expand your knowledge, but also inspire new ideas and projects. Do not miss the opportunity to immerse yourself in the world of automation and discover new horizons in this exciting area.