Methods, computer-readable media, and systems for interrupt handling in Java\u2122 are provided. Also a switching power supply that has little voltage stress on a switch and is suitable for reduction in loss and miniaturization is provided. The washing machine may also include a supporting plate to rotatably support a rotational shaft extending between the motor and the drum, and a plurality of supporters connected between the supporting plate and the cabinet. The apparatus can guarantee QoS and maximize channel utilization. The interconnect architecture comprises switches and registers. The operations of pressing the pressing roller to the scanner and pressing the pressing pad to the MICR head are performed by one driving mechanism by cooperating the arm, rotation cam, roller lift member and link member.