A portable electronic terminal apparatus includes a main body, an information input mechanism, a plurality of displays, a communications mechanism, and a flip panel. The main body has a hollow section. The information input mechanism inputs various kinds of information including data and instructions. Each of the displays shows the various kinds of information input through the input mechanism. The communications mechanism transmits and receives the various kinds of information input through the input mechanism. The flip panel is movably mounted on the main body and is configured to rotate to open and close about a side edge portion of the flip panel. This flip panel is retracted in the hollow section of the main body when the flip panel is closed. In addition, one of the displays is mounted on the flip panel.