Layout designing/characteristic analyzing apparatus for a wiring board

A layout designing/characteristic analyzing apparatus for a wiring board includes a module library memory for storing in advance for each of wiring board modules which are constituents of the wiring board, moduled circuit information on moduled circuits which constitute a wiring board circuit, wiring information and an analysis model for use in characteristic analysis; an input section for inputting instructions on connection of the moduled circuits so as to construct a desired circuit; a module coupling section for connecting moduled circuits based on the inputted instructions, for determining a layout of the wiring board based on the wiring information of each module and for generating a coupled analysis model in which the analysis models of the modules are coupled; a characteristic analyzing section for analyzing the characteristics of the wiring board based on the generated coupled analysis model; and an output section for outputting the determined layout and the results of the characteristic analysis of the wiring board.