timer04.c

这是用51单片机开发的电子时钟

/*从第一个数码管开始轮流显示0~f*/
#include <reg52.h>
#define uint unsigned int
void delay(uint z)
{
  uint x,y;
  for (x=z;x>0;x--)
     for(y=110;y>0;y--);
}	
void display()
{
        P0=0x00;
        delay(300);
	    P0=0x11;
	    delay(300);
	    P0=0x22;
        delay(300);
	    P0=0x33;
        delay(300);
	    P0=0x44;
	    delay(300);
	    P0=0x55;
        delay(300);
	    P0=0x60;
        delay(300);
	    P0=0x71;
	    delay(300);
	    P0=0x82;
        delay(300);
	    P0=0x93;
        delay(300);
	    P0=0xa4;
	    delay(300);
	    P0=0xb5;
        delay(300);
	    P0=0xc0;
        delay(300);
	    delay(300);
	    P0=0xd1;
        delay(300);
	    P0=0xe2;
        delay(300);
	    P0=0xf3;
}
void main()
{
while(1)
  {
    display();
   }
}