In the electronic apparatus according to the present invention, two display units differ in size are coupled so that an edge part of one of the display units is exposed from the other display unit when the electronic apparatus is folded. An index unit is installed on the edge part and displays index tabs of data recorded in the electronic apparatus. When a user opens the folded electronic apparatus while pressing one of the index tabs, data corresponding to the designated index are extracted from the recorded data and are displayed on the display units.