The book "Fundamentals of construction and functioning of computer systems" by Evgeny Drozdov is an indispensable resource for everyone who is interested in modern technologies and the basics of computer science. In this work, the author immerses the reader in the world of computer systems, revealing their internal mechanisms and principles of operation. This is not just a textbook, but a real encyclopedia of knowledge that will be useful for both students and professionals in the field of information technology. Drozdov, known for his in-depth research and practical approach to learning, creates accessible and understandable text that is not overloaded with complex terminology. It skillfully combines theoretical aspects with practical examples, which allows the reader not only to assimilate information, but also to apply it in practice. The book covers a wide range of topics, such as computer architecture, operating systems, networking technologies, and more. Each chapter is built to gradually deepen understanding, starting with the basics and ending with more complex concepts. This book will be of particular interest to technical students, graduate students and anyone who wants to deepen their knowledge in the field of computing systems. It can be a great help for those who are preparing for exams or want to refresh their knowledge before starting a career in IT. In addition, the book will be useful to practitioners who want to update their knowledge of modern technologies and trends in the field of computing systems. The topics raised in the book cover not only technical aspects, but also philosophical issues related to the impact of computing systems on society. Drozdov raises important questions about how technologies change our lives, what are their pros and cons, and what challenges humanity faces in the era of digitalization. This makes the book relevant not only for professionals, but also for a wide audience interested in the future of technology. Evgeny Drozdov's style is distinguished by clarity and accessibility. He is able to explain complex things in simple language, which makes his books attractive to a wide audience. His other well-known works, such as