A toothbrush including a handle and a head mounted to one end of said handle, the head having a cleaning block forming a front surface of the head. A processor device includes a memory controller unit coupled to a main memory and a cache memory. A programming voltage can be supplied to the fuse at a second terminal of the fuse; and a logic gate circuit is connected to the gate of the programming transistor. The design system retrieves parameters of a second antenna system from a second database system. The controller writes arbitrary data to a test track on the disk to obtain a first bit error rate of the test track.