新建文件夹\twobit.c ..........\twobit.LST ..........\twobit.OBJ ..........\两位数码管 ..........\两位数码管.hex ..........\两位数码管.M51 ..........\两位数码管.Opt ..........\两位数码管.plg ..........\两位数码管.Uv2 ..........\两位数码管_Opt.Bak ..........\两位数码管_Uv2.Bak 新建文件夹