A surface mounted component and a via share the same pad on the surface of a multilayered printed wiring board to increase the density of surface mounted components on the surface and to reduce the impedance between the surface mounted component and the via. The firearm cartridges are stored in a tight spiral channel side by side to maximize the use of the peripheral space surrounding the area of a magazine well or feed point of a firearm. Coherent integration with the direct sequence code is achieved through the use of shift registers, code modulators, and integrators, and applied to subsequences of the spreading code. The engine control section selects, as the voltage to be applied to the charging roller, any one of the voltage values determined by the first and the second applied voltage determining units based oh the environment information. If it is of a split voltage plane type, the switching circuit applies the output of the fixed-voltage power supply to an IO voltage plane of the processor, with the programmable power supply being first set to generate a voltage determined by whether a second grounded pin is present in the processor.