| 摘要 |
PURPOSE:To execute the replacement of a data transfer processing program data from an external storage medium by storing in advance the data transfer processing program data in the external storage medium, and also setting the input function of this program data to an interface. CONSTITUTION:A program data for compensating a difference between the data transfer period of a host computer 10 and the cycle time of the memory if an IC card, and executing a data transfer processing between both of them is stored in an IC card 30. When the IC card 40 is set, an interface 20 executed between the IC card 40 and the host computer 10 in accordance with a data transfer processing program data which is held in an internal memory. On the other hand, when the IC card 30 is set, the data transfer processing program data is fetched from the IC card 30, and held in its internal memory, by which the replacement of this program is executed.
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