"Basics of Computer Science and Technology .". A Test Textbook for 10-11 Years of High School” is an indispensable assistant for high school students seeking to understand the fundamental principles of the modern digital world. With the rapid development of technology and constant changes in the field of information technology, this book becomes a real guide that reveals complex concepts in an accessible and fascinating form. The author, while remaining anonymous, created a textbook that combines the theoretical foundations and practical skills necessary for the successful development of computer science at the school level. What makes "Basics of Informatics and Computer Engineering" such an attractive and valuable resource? First of all, It is his ability to combine theory and practice. Showing, How Computer Systems Work , Algorithms and Programming , and how networks and databases are organized. The reader is invited to plunge into the world of bits and bytes, understand the principles of the processors, learn the basics of operating systems and get acquainted with modern trends in the field of information security. The book will also have a place to discuss topical issues such as artificial intelligence, cloud technologies and the development of the Internet of Things, which makes it especially relevant for those who want to be aware of the latest trends. This book is ideal for high school students in grades 10 and 11, as well as for those who are just beginning their journey in the field of information technology and are looking for an understandable, structured and rich material manual. It will be interesting both for students planning to connect their future profession with IT, and for teachers looking for modern educational material for preparing for exams and Olympiads .. The author's style is distinguished by clarity, logic and vivid presentation, which helps to easily assimilate complex topics and maintain interest throughout the educational process. The book pays special attention to practical tasks and examples, which makes it not only a theoretical tool, but also a tool for consolidating knowledge through practice. During the study, the reader will not only get acquainted with the basic concepts, but also learn how to apply them in practice - write simple programs, analyze algorithms, work with databases and network protocols. This approach contributes to the development of critical thinking and analytical skills, which is especially important in today's information-rich world. Why exactly this book deserves attention? First, it covers a wide range of topics, from basic concepts to modern technologies, making it a universal teaching aid. Secondly, the author's style, saturated with living examples and understandable explanations, helps to overcome the fear of complex technical aspects and stimulates interest in further study. Thirdly, the book will prepare students for exams, Olympiads and competitions in computer science, as well as provide a solid basis for independent development in the field of information technology. If you are looking for a textbook that not only explains the basics, but also inspires further study, "Basics of Computer Science and Computing" A test textbook for the 10-11 grades of high school” is exactly the resource that will help you unlock the potential and understand how the modern digital world works. This tutorial will be your reliable companion in the world of information, technology and innovation, opening the door to a future full of opportunities and discoveries.