Data processing system using IC card
 An IC card (24) and a data memory card (23) are mounted to a terminal equipment (1) connected to a center computer (32) via a line. Confirmation information stored in the IC card is checked whether or not it coincides with confirmation information stored in an RAM (6) in the terminal equipment or confirmation information stored in the data memory card. After coincidence of the confirmation information is detected, the terminal equipment performs the processing to be conventionally performed by the center computer in place of the center computer. An IC card intake and outtake processing mechanism (104) in the terminal equipment does not send out the IC card to the outside of the terminal equipment when the power of the terminal equipment is shut down. 
Hitachi Maxell, Ltd.
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Mitsuo Naotake Makoto Kunihiro Kenichi
Mimura Nakamura Ochiai Okada Kitta