A level translator circuit for use between a transmitting voltage potential circuit and a receiving voltage potential circuit is disclosed. Next, a resist mask selectively covering the rear surface of the n\u2212 semiconductor wafer is formed. When it is determined that the detected voltage value V does not exceed a reference voltage value Vr, an operation mode of the printing operation is set to a first printing mode. The air seal has a generally round central sheet and a number of radially adjustable segments extending radially from the central sheet corresponding to the number of hub struts. A normally unused wire-pair in the telephony connectors brings the DC power to each seatback. A mobile terminal may include a printed circuit board coupled to a keypad assembly and mounted within a case or housing, wherein a microphone is integral with the PCB.