A dictionary is a manual combining interpretive, reference, and teaching functions. Contains definitions, explanations, examples of use and English equivalents of over 2,500 basic terms and phrases The following topics are discussed: General information , data and its processing types, Models, architecture and basic computer parameters external devices operating systems methodology, languages and programming systems of the database and knowledge of multimedia work with the computer system and the user interface of the computer network and means of computer communication . Many articles contain examples and illustrations. When selecting materials, the authors focused mainly on users of personal computers working with the most popular Windows applications. The presentation of issues related to the general programming methodology is accompanied by examples in the most common languages: Pascal, Fortran, C.