Segmov.rar_MOV seg

/*数码管动态显示*/ #include<reg51.h> unsigned char code Table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //定义共阴极段码表0~9 void delay(int TimeMS); void display(); void main() { P0 = 0x00; //P0口清零 P2 = 0xff; //4个数码管均不亮 while(1) { display(); delay(20); //字符显示20ms } } /*延时函数*/ void delay(int TimeMS) { int i; unsigned char j; for(i = 0;i < TimeMS;i++) for(j = 0;j < 161;j++); } /*显示子程序*/ void display() { unsigned char i,Slc; Slc = 0xef; //选第一个数码管 for(i = 0;i < 4;i ++) { P0 = Table[i+1]; //选择第一个数码管 P2 = Slc; //选通数码管 delay(5); Slc = Slc << 1; //移位选通下一个数码管 P2 = 0xff; //消影 } return; }