Electronic apparatus which may include a main body portion having a back surface and a keyboard located at a part of the main body portion other than the main body portion back surface, a display portion having a back surface and a display screen on a display surface opposite the display portion back surface, and a coupling portion that rotatably couples the main body portion and the display portion. In a closed state, the main body portion back surface and the display portion back surface may face each other and the electronic apparatus may be operable as a portable apparatus in which all of the display surface having the display screen except for a relatively small perimeter portion thereof may be usable as a display in at least a direction corresponding to the width thereof. In an open state, the electronic apparatus may be operable as a personal computer.