A method of designing an integrated circuit includes performing a pre-layout simulation of the integrated circuit. Position data points for a group of vehicles create separate paths for each of the vehicles in the group. The space-bandwidth product of the hologram is thus reduced to a minimum and the periodicity interval of the Fourier spectrum is used as a viewing window on the inverse transformation plane, through which the object is visible in the preceding space. A positive-tone development process is performed to remove the first exposure region from the positive photoresist layer to form first opening. Thereafter, an electrical potential applied to the substrate removes topographic portions of the substrate that are exposed to the polishing solution. A press-in portion is integrally formed in a side portion of the connecting terminal.