Monograph . - Volgograd: VA Ministry of Internal Affairs of Russia, 2003. - 156 s. The monograph deals with the most pressing theoretical and practical problems of the development and application of computer technologies in the activities of investigators , provides a theoretical justification for some aspects of the method of problem setting in the design of an automated information system (AIS) of the investigator , proposed methodology for the use of AIS in the collection and evaluation of evidence , adoption and execution of procedural and organizational decisions in the investigation of crimes, taking into account the new criminal procedural legislation . The publication is intended for cadets, listeners, teachers and adjuncts of educational institutions of the Ministry of Internal Affairs of Russia. It will also be useful for investigators and investigators.