Abstract: An interactive source-code software production system and method modeling complex sets of functional modules is described. This system and method uses a graphic editing software stored in the memory of a computer and draws up graphic plates describing complex logic circuits of the module from a library of graphic symbols to produce a file for precoding symbols. The system and method allow coherent control between the symbols of each plate for coherent controlling of the temporal order of execution conditions of the plates. A control dictionary is provided for updating the plates. Finally, the source-code software is produced from processing the contents of the precoding file and that of the dictionary.