An air cleaner comprises an enclosing structure having support members spaced a distance from top and bottom walls. The gate dielectric includes a sidewall portion on a sidewall of the gate electrode. The operation then drops one or more of the received debug data packets at the memory, and maintains a count of the one or more dropped debug data packets. The electrode of the semiconductor chip is electrically connected to the connecting pattern via wires through the elongate opening. Other embodiments include a capacitor for storing charge. Then, executing an illegal access coping program on the primary OS, the computer accesses the data server, judges whether a response to the access received from the data server is normal or abnormal and obtains data stored in memory managed by the secondary OS if it is judged that the response is abnormal.