说明：  程序实现了mfr500对IC卡的读写操作，函数返回了“寻卡，防冲突，选择卡 返回卡类型（2 bytes）+ 卡系列号(4 bytes)”经工程证实，程序可用
(program on the IC card mfr500 write operation, the function returns a "find cards, prevention of conflicts, choose to return to card type card (2 bytes) card serial number (4 bytes) "project confirmed that the procedure can be used)