A parting tool for continuous chipless separation of identical parts from a rotation-symmetric workpiece, includes a cutting roller having a main body advancing a workpiece in a transport direction from an entry side to an exit side. If the erase verify read operation fails because unerased memory cells have been found, a normal memory read operation is performed in order to determine which memory cells are still programmed. Thus, as a result of the teachings disclosed herein, customer satisfaction, employee satisfaction, and revenue may be improved in the contact handling industry. The playback controller enables selection of an audio-video content choice for playback by the audio-video content playback device. are formed on the above structure. The word line driving circuit includes a second pad separated from a first pad, the first pad being applied with a first ground voltage, the second pad being applied with a second ground voltage, and a word line driver supplied with the second ground voltage, the word line driver driving word lines.