The image of a subject is displayed on a display screen of a liquid crystal display device provided on the back side of a digital camera. A TCP protocol stack may store a payload of a received TCPIP packet in a data fragment list. Information associated with the acceleration time history waveform is loaded in a controller which produces shaker drive signals that control movements of a shaker. In addition, the engine control method also changes to combusting in all cylinders under preselected operating conditions such as fuel vapor purging, manifold vacuum control, and purging of stored oxidants in an emission control device. Hence, a user not only can hear a song playing from the device but also can see lyrics of the song shown on the display element at the same time. When operating the mouse device, the user uses an index finger and a portion connecting the index finger and the palm to form an arch atop of the front curved surface and the rear curved surface, thus the mouse body is largely under the index finger.