Binary indications are converted to an analog representation with significant reduction in ringing at the transitions between successive binary indications and in the period during each binary indication. The system and method reduces the design time dramatically by performing the complex iterative procedure required to optimize the operating points and component values of the circuit. Therefore, the two state utterance verification device and the method thereof provide a high quality speech recognition service to a user. In addition, fabricating processes will become simplified and fabricating costs will be reduced because the conductive particles and the EL layer can be formed simultaneously. The support also houses a sensor arranged to sense the magnetic field, such that the passage of the piston into a position corresponding with the magnet causes a disturbance in the magnetic field, which is sensed by the sensor, to indicate a stroke of the piston.