This manual contains information about electronic computing: classification, characteristics, principle of operation; types of information and methods of its presentation in a computer; number systems; computer logic fundamentals; elementary logic functions; fundamentals of microprocessor systems (microprocessor architecture and its elements, microprocessor instruction set, instruction execution procedure, microprocessor duty cycle); typical units and devices of computer equipment (registers, decoders, counters, adders); organization of interfaces in computer engineering; computer peripherals.