The invention has an object to provide an electronic paper file with high operating
performance. The electronic paper file is assumed to comprises an electronic paper
of an flexible display medium and a cover to which a plurality of electronic papers
is attachable. In the invention, the first storage means stores display-data to
be displayed on the electronic paper. The first display control means obtains from
the first storage means the display-data corresponding to the desired page selected
by the page selecting means and then display them on the electronic paper. Accordingly,
even if the enormous pages of the electronic paper were not attached to the electronic
paper file, the invention can display the whole of mass data such as an encyclopedia
or theses data. Therefore, it is possible to improve the operating performance
of the electronic paper file.
