| 摘要 |
PROBLEM TO BE SOLVED: To securely prevent data from being read illegally. SOLUTION: A program supplied from a personal computer through an interface 31 is processed in accordance with a program stored in a ROM 36, developed in a RAM 33 and executed by a CPU 32. Data obtained as the result of execution is stored in a nonvolatile memory 34. The interface 31, the CPU 32, the RAM 33, the memory 34 and the ROM 36 are housed in an adapter 26 integrally formed as a semiconductor IC. |
