The book describes the organization of a system of digital units in the modern KAMAK standard and their operation on a communication line with small computers. The proposed block system is widely used as in scientific research! and in industry, where preliminary collection and processing of information is required for its subsequent transfer to a computer. As an example, descriptions, characteristics and schematic diagrams of some devices and computer interfaces made in the KAMAK standard are considered. The book is intended for engineers specializing in the design of digital devices, control, computer technology, computer users, as well as for scientists, graduate students and senior students of relevant specialties.