| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to record a large amount of information, and also to improve the processing speed and security of a portable information recording medium, by recording the information to both 1st and 2nd IC modules containing the nonvolatile memories. SOLUTION: An IC card 100 serves as a double chip type IC card, which contains a 1st IC module part 10 and a flash erasion type EEPROM (flash memory) 20 that is formed on the card surface as a 2nd IC module part. A contact terminal 30 is provided on the surface of the part 10. The card 100 is accessed by an exclusive terminal equipment 200. For instance, a byte rewrite type EEPROM 15 included in the part 10 of the card 100 has the memory capacity of only 8KB. On the other hand, the memory 20 can record the information of 8MB. Therefore, the card 100 can record a large quantity of information compared with an IC card provided with only the module part 10. |
