Contact structures having I shapes and L shapes, and methods of fabricating I-shaped and L-shaped contact structures, are employed in semiconductor devices and, in certain instances, phase-change nonvolatile memory devices. The processor is installed in an electronic device having a control circuit, a frequency divider circuit and a time counter. Quantitative and qualitative characteristics of interest may be determined. The lockpiece is allowed to slide relative to the plunge post along with the electric motor and motor housing when the lockpiece is in an unlocked position. One detection method relates to the number of people that are present in a region of interest for a specified time period. The PLD includes a memory for storing information input from an information source located externally to the PLD; a circuit element group including a plurality of circuit elements; and a logical circuit configured on the circuit element group in accordance with the information in the memory.