PURPOSE: To acquire desired book data at need by requesting book data by inputting a number similarly as in the request of KARAOKE music and registering it on an IC card by an IC card writer.

CONSTITUTION: A KARAOKE base station 3 is equipped with a book data-base in which document data that can be used in an electronic book is accumulated. The document data for electronic book is transmitted periodically from a publisher to the KARAOKE base station 3 via a communication channel. A customer inputs the number as observing a document name/music name correspondence number directory K, and orders the music and the electronic book (document data) to the KARAOKE base station 3. A KARAOKE terminal 2 receives the data, and delivers the data to the IC card writer 40 since the data at the leading position of which B is attached shows the data for electronic book, and the IC card writer 40 writes the document data on the IC card 20. The character of a document is read by displaying by loading the IC card 20 on which the document data is written on the electronic book 11.