In an embodiment, a method is provided for conducting a search. A plurality of bottoms streams can be collected from the fractionation process. In the method, broadcasting channel information is provided to users together with contents of preview dynamic images or still images for digital broadcasting programs, so that the users view image information for broadcasting programs in advance. Methods for using the device are also disclosed. , power state condition monitoring function, a control function for dynamically controlling the common supply source, and auxiliary functions, which may be protective of a flash memory. Two particular docks, the laptop dock and the smart dock, provide special functionality with the device.