A wiring board includes a pad exposed from an opening portion of an outermost insulating layer. The regulator circuit also includes a dynamic bias circuit that may selectively provide a bias voltage to a gate of the second transistor. A second III-V compound semiconductor layer for forming the first semiconductor optical element is then formed on the first III-V compound semiconductor layer. In another embodiment, the method further includes encoding the image to a coded image. A strap extends between the first and second ends of the clip for securing the first and second ends of the clip together. In one embodiment, the most significant bits of the product are selectively provided to the first output data bus using bus multiplexer logic, and the least significant bits of the product are selectively provided to the second output data bus using bus multiplexer logic.