| 摘要 |
A plurality of key data are stored in an internal memory. These key data are collated with a set of second key data selectively input from an external device. Collation results are stored in units of key data. Upon an access to an area in the memory, an access is enabled when one of the stored collation results is affirmative or when all the collation results are affirmative. A plurality of access enable/disable judgement data are stored in correspondence with the areas, and a corresponding one of the access enable/disable judgement data is selected in accordance with externally input instruction data. An access enable/disable judgement for the area is made in accordance with the selected access enable/disable judgement data on the basis of the collation result.
|
