Electronic data processing (EDP) system for automatic or semi-automatic design, including of at least one storage unit, at least one computer unit, a user interface, and at least one interface to other EDP systems, characterized in that: a) the computer unit leads the user through an iteration sequence of synthesis and analysis of a future useful technical object in that it b) offers to the user via a menu structure selection possibilities originating from the storage unit of kinematic, kinetic, material, geometric and form-related data, c) invites the user to complete these data corresponding to the task, d) processes, stores and compares these data with known data contained in the storage unit, e) sets out the processed data and the results of the comparison on the user interface, informs the user of admissible and/or inadmissible deviations and invites the user to carry out further decisions and data inputs, f) for so long until all the deviations lie within admissible ranges, and by reference to the form-related instructions stored in the storage unit formulates technical documentation with the manufacturing and operating instructions for the future useful technical object, stores it and makes it available to the user on the user interface for further processing.