An information service system is provided, particularly for use by the police. Even when a great amount of data are stored, processes such as reading out, transferring, and displaying requisite data can be efficiently executed at high speed. The resistor is coupled in series with a switch, forming a discharge path to ground for the output capacitor. The apartments contain objects that have methods to perform operations. Other system parameters may be monitored to improve on the system monitoring, diagnostics, and control. The GHM layer in the first opening and the second opening is then removed.