The book "Telegraphy and the basics of data transmission" by B. Kogan is a fascinating and informative work that immerses the reader in the world of telecommunications and information transfer. In this work, the author masterfully combines theoretical aspects with practical examples, which makes it indispensable both for students studying the basics of communication and for professionals seeking to deepen their knowledge in this field. In. Kogan, known for his work in telecommunications, offers readers a unique perspective on the development of telegraphy and its impact on modern society. The book covers a wide range of topics, from the history of the telegraph to modern methods of data transmission. The reader will be able to learn about the first attempts at transmitting information at a distance, about how the telegraph changed the world, and about how these technologies have evolved in the digital age. One of the key themes of the book is the impact of telegraphy on social and economic processes. Kogan emphasizes how the advent of the telegraph has contributed to globalization by accelerating the exchange of information and making it available to a wide audience. It also looks at how the telegraph has become the basis for further communications innovations, such as the telephone and the internet. This historical perspective allows the reader to better understand how technology shapes our society and how it can influence the future. The book will be of interest not only to students of technical specialties, but also to everyone who is interested in the history of technology and their impact on society. It is suitable both for young people seeking to obtain basic knowledge in the field of telecommunications, and for more mature readers who want to refresh their knowledge or learn something new. Due to its accessible language and fascinating style of presentation, Kogan makes complex concepts understandable and interesting. The author's style is clear and logical. He skillfully uses real-life examples to illustrate complex ideas, which makes reading not only informative, but also fascinating. In. Kogan is also known for his other works on various aspects of communication and data transfer, and this book is no exception. His ability to explain complex things in plain language makes his works particularly valuable to a wide audience. The book "Telegraphy and the basics of data transmission" also raises important questions about the future of technology and its role in our society. With the rapid development of digital technologies and constant changes in the field of communication, understanding the basics of telegraphy and data transmission is becoming especially relevant. Kogan makes the reader think about how these technologies will develop in the future and how they can affect our lives. Thus, “Telegraphy and the basics of data transmission” is not just a textbook, but a real find for anyone who wants to understand how the communication world works. This book will be a great addition to the library of anyone who is interested in technology, history or just wants to expand their horizons. Do not miss the opportunity to immerse yourself in the fascinating world of telecommunications with B. Kogan!