A digital camera is provided with a reflectingtransmitting-type liquid crystal display unit that includes a backlighting device for controlling whether backlighting is turned on or off. The Tap’s TMS andor TCK terminal can be used as a serial IO communication channel between; an IC and an external controller, between a first and second IC, or between a first and second core circuit within an IC. In another embodiment, the coupling assembly of the present invention includes a seal gland having therein one or more connectors that enable the seal gland to be raised and lowered relative the position of the pump’s motor.