| 摘要 |
PROBLEM TO BE SOLVED: To prevent a program from being added, deleted, or unauthorizedly downloaded. SOLUTION: In this method for program modification, the program modification system of the main body 1 of portable electronic equipment which downloads a program from a program transfer device 7 and modifies it is equipped with a program storage means which stores programs by functions and a management table means which holds information showing whether or not the programs are used and deletes unused program from the program storage means. |
