1 /*电压表 精确到小数点后面三位*/ 2 /*连线：电位器接IN0，AD_CS接CS0,CS1接KEY/LED_CS*/ 3 #include
     
       4 typedef unsigned char uchar; 5 xdata uchar LED_CS _at_ 0x9000; 6 xdata uchar LED_OUTSEG _at_ 0x9004; 7 xdata uchar LED_OUTBIT _at_ 0x9002; 8  9 xdata uchar AD_CS _at_ 0x8000;10 xdata uchar AD_MODE _at_ 0x8003;11 12 code unsigned char LEDMAP[] = {  // 八段管显示码13   0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07,14   0x7f, 0x6f, 0x77, 0x7c, 0x39, 0x5e, 0x79, 0x7115 };16 code unsigned char LEDWED[] = {
   0x20,0x10,0x08,0x04,0x02,0x01};17 int num[6];18 void delay(int ms)19 {20  int i,j;21  for(i=0;i