The book by a famous American specialist introduces the basics of modern electronics in a simple and accessible form. Its main goal is to theoretically prepare future specialists - electricians and electronics engineers - for practical work, therefore, in addition to a detailed presentation of the principles of operation of measuring and semiconductor devices, integrated circuits, general issues of the physics of dielectrics and semiconductors are considered. A discussion of the general principles of microelectronics, a description of digital information processing algorithms is accompanied by examples of the practical implementation of digital signal processing devices, the principles of operation and the design of a computer are described. The book is equipped with a large number of examples, tasks and exercises, the implementation of which helps to understand and master the material. Intended for senior students of secondary specialized educational institutions of radio engineering profile, and will also be useful for independently studying the basics of electronics.