The book begins a series of encyclopedic reference books on the modern element base of electronic technology. A distinctive feature of the directory is the widespread use of references to electronic databases of components of manufacturers. The book provides all the necessary information to understand the principles of operation, the classification system, terminology, standard parameters and inclusion schemes, and all the actual information about specific chips is contained in the form of links to manufacturers' sites. This approach made it possible to place data on 10 types of modern BIS in a small format: DAC, ADC, frequency synthesizers, memory IMS, microprocessors, microcontrollers, digital signal processors, programmable logic matrices, quadrature processing schemes and codecs. The necessary theoretical concepts are given and examples of specific schemes of inclusion are given. The book can be used as a tutorial on the EC course as a guide to choosing an element base for an EC supply manager, and can also be useful as a short guide for REA developers.