A fold-type cellular phone has a top unit, a bottom unit and a hinge coupling together the top unit and the bottom unit while allowing the top unit to turn and swivel with respect to the bottom unit. A surface of the front-sided wiring pattern is flush with a surface of the first insulating resin layer, and a surface of the rear-sided wiring pattern is flush with a surface of the second insulating resin layer. The tactile feedback generator includes dome-shaped inversion plates that are separately provided at locations corresponding to the input sections and provide feedback to the operator. The Feature Directory stores information about optional devices connectable to the printer. The indolestyryl compounds also have high sensitivity and chemical stability toward light and heat. By rotating the knob, the fastening member is forced to move toward the wall of the work tray.