A portable electronic device includes: a computing device body including a main housing, a computing device disposed in the main housing, a keyboard and a touch control display disposed on the main housing and connected electrically to the computing device; a display screen body including a display housing and a flat panel display disposed on the display housing and connected electrically to the computing device; and a two-dimensional hinge connecting pivotally the display housing to the main housing such that the display screen body is pivotable relative to the main housing. The computing device is configured to output image signals to the touch control display and the flat panel display, respectively, the image signals being generated based on user operation of at least one of the touch control display and the keyboard and being output simultaneously to the touch control display and the flat panel display.