uchar code LED_TAB[7]={0x1f,0x2f,0x37,0x3b,0x3d,0x3e,0x3f};//数码管7个位
uchar code BCD_TAB[11]={0x03,0x9F,0x25,0x0D,0x99,0x49,0x41,0x1F,0x01,0x19,0xff};//0~9,0XFF是关闭
uchar code CCBD_TAB[10]={0x31,0xFD,0x91,0x61,0xF5,0x11,0xC1,0x63,0xe3};
// P - H E R A B C L
uchar xdata DISP_SAVE[6]={0X03,0X03,0X03,0X03,0X03,0Xff};//要送显的数据寄存器