The study and calculation of the characteristics of multi-link switching blocks: method. Laboratory Manual. work on the course "Fundamentals" by author B. A. Aksenova is a unique manual that will become an indispensable assistant for students and specialists in the field of electrical engineering and telecommunications. In it, the author shares his deep understanding and experience in the study of complex systems, which makes it not only a teaching material, but also a practical guide for anyone seeking to master this important area of knowledge. The book covers a wide range of topics related to multi-link switching blocks, ranging from theoretical foundations to the practical aspects of their design and analysis. Aksenov invites readers to immerse themselves in the world of electrical circuits and systems, where each element plays its role. He explains in detail how to correctly calculate the characteristics, which allows not only to understand the theory, but also to apply it in practice. This manual is ideal for technical university students, graduate students, as well as for practicing engineers who want to update their knowledge and skills. The topics raised in the book cover not only technical aspects, but also broader issues such as process optimization, system efficiency, and current trends in telecommunications. Aksenov emphasizes the importance of the correct selection of components and their interaction, which is a key point for the successful design of complex systems. Readers will be able to learn about the methods of analysis and synthesis, as well as about modern approaches to the development and testing of switching blocks. The author's style is distinguished by clarity and accessibility, which makes the material understandable even for those who are just starting their way in this area. In. A. Aksenov is an experienced teacher and practitioner who knows how to convey complex ideas to students. His previous work has also earned recognition, and this book is no exception. It is written taking into account the current requirements of educational programs and includes many examples and tasks, which allows readers to consolidate the knowledge gained in practice. The book will be interesting not only for students, but also for teachers who are looking for high-quality educational materials for their courses. It can be a basis for laboratory work, as well as a useful resource for self-study. Readers interested in topics such as electronics, automation and information technology will find in this manual a lot of useful information that will help them deepen their knowledge and skills. If you are looking for a high-quality textbook on the basics of electrical engineering and telecommunications, which combines theory and practice, then “Research and calculation of the characteristics of multi-link switching units” A. Aksenova is exactly what you need. This book will not only expand your horizons, but also help you become a more confident specialist in your field. Do not miss the opportunity to get acquainted with this valuable work, which will become your reliable companion on the way to professional success.