| 摘要 |
An IC card (1) storing therein information transmitted from an external terminal unit includes a processor (3), an interface (2), a first memory (6) for storing a system program, a second memory (4) for storing an application program, and a third memory (5) for storing processed data. The second memory (4) includes a latch circuit (4a) for temporarily latching data of a plurality of bytes transmitted to the IC card from the external terminal unit, and an electrically erasable and programmable memory (4b) for storing data of a predetermined number of bytes when the data is transferred to the latch circuit.
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