| 摘要 |
PURPOSE: A book page display device is provided to enable a user to memorize the page of a book using a button plate included inside the book when the user wants to memorize the page which the user read. CONSTITUTION: A book page display device comprises: a button plate(10) which is attached to the front side of a book; a plurality of buttons which are attached to the button plate; a spring which is elastically projected on the lower part of the button; and a lock device to make the upper end of the button dented. In the button of a first line, the number of 0 is inscribed. In the button of a tenth line, the numbers of 0~9 are inscribed. |
