| 摘要 |
There are provided a non-volatile memory in which two physical sectors have been set as areas to store a basic program, an apparatus for obtaining a new basic program from the outside, and a processor for executing an application program stored in the memory in accordance with the basic program stored in the memory. The processor allows the obtained new basic program to be stored into the physical sector which is not used to write the basic program between the two physical sectors in the memory. A new basic program is stored into the other physical sector which is not the physical sector in which the basic program has been stored at the preceding time. Upon activation, the physical sector to write the basic program is switched in accordance with whether the program is normally activated or not.
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