A circuit includes a switching unit, a switching element, and a control unit. Transform unit sizes are determined that are not available for performing a transform of the one or more units of video. The memory cell can be configured to generate a bit-line current on the bit-line node in response to a bias voltage during a read operation. The semiconductor wafer is then plasma etched through the gaps in the patterned mask to singulate the integrated circuits. As the polarity is alternately changed over by the power supply change-over device when a direct current is supplied to the exciting coils of the electromagnetic units, the coil unit or the magnetic unit reciprocates, and further the shaft reciprocates in the axial direction.