An apparatus, such as a printer or reader receives a data stream from a memory, such as from an RF or photonic memory, and compares portions of the data stream to a table of data. The printed circuit board has a through-hole for mounting the semiconductor switching element to both of the conductive patterns. The core network management device automatically orders, based on the request, network elements of the access network section to perform tracing regarding the wireless terminal. One surface of a semiconductor wafer is in contact with the first layer. A light source unit is disposed along at least one side of the light guide plate.