A glass or plastic wall structure with nested channel members is provided with electroluminescent strips running along the channel flanges to provide an internal illumination. The base plate comprises a mechanism for allowing the base plate to move with respect to the first element substantially along a first direction. The processor determines the object’s pose according to detected light. Then, the electronic file management server generates a two-dimension bar code including the URL, allotted to the printing data, and the data concerning the printing condition, and sends it to the user terminal. The quilting and combining of the panels for assembly of a mattress product can be carried out manually or automatically using the data. Circuits such as a central processing unit and a memory, necessary to drive an electric device, are formed using single crystalline semiconductor integrated circuit chips.