Invention problem solving is connected to essential expenses of labour and time, which is spent on the procedures of search and ordering of necessary knowledge, on generation of probable variants of projected systems, on the analysis of offered ideas and decisions and understanding perspectiveness of them. The monograph present outlines the results of the developments in the field of creating computing technology of the synthesis of new engineering on the level of invention. The most attention is paid to problem of computer aided designing on initial stages, where synthesis of new on principal technical systems is carried out. Computer-aided construction of new technical system is based on using of data -- and knowledge bases of physical effects and of technical decisions as well as different heuristic systematization procedures. The synthesis of principles of function of the technical new systems is carried out with using experts knowledge and requires the application of the artificial intelligence methods and the methods of the decisions making theory for invention's tasks. Considered approach has been used for synthesis of new technical systems of different functional purposes and had shown high efficiency in computer-aided construction.