利用程序在ROM中设置40个固定数值在41～80的BCD码数据，程序运行时，把该数据块读到片内RAM的20H～47H区间，然后把该数据块变换为BIN码（二进制制）存于片内的48H ～6FH区间，再把BIN数据变换为ASCII码存于片外RAM 0100H ～ 013FH区间-The use of the program set in the ROM 40 is fixed at the value 41 ~ 80 BCD code data, the program runs, to read the data blocks 20H ~ 47H interval chip RAM, then the data block is converted into BIN codes (binary system ) kept in the range 48H ~ 6FH-chip, and then converted to ASCII code BIN data stored in off-chip RAM 0100H ~ 013FH range