Enabling a client computer to perform an operation is disclosed. By moving the auxiliary member, the dimension of the tip end of the lancet projecting from the tip end portion of the auxiliary member can be varied. This can be done, for instance, by analyzing the telephone connection or querying a database containing a plurality of telephone numbers and characteristics of each of the telephone numbers. Each neuron drives the single-wire AND-bus with an open-collector buffer. The tightening members are screwed into the pivot holes of the decorative articles and the locating holes of the license plate frame to easily replaceably lock the decorative articles with the license plate frame to achieve a decorative and beautifying effect.