程序1.c.c

分别按照不同的方式动态显示 数字,适用于AT89S52单片机,LED为8位共阴

//显示0123
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
#define hi1 0xff
#define lo1 0x00
sbit P20=P2^0;sbit P21=P2^1;sbit P22=P2^2;sbit P23=P2^3;
unsigned char code ledk[17]={0x3f,0x06,0x5b,0x4f,0x66,0x6D,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};

sbit P37=P3^7;sbit P10=P1^0;
sbit clk=P0^7;sbit sda=P0^6;                                                                                      //p3
//=============================
void delay (unsigned int n)
{unsigned int i,j;
 for(i=0;i<n;i++)
   for(j=0;j<n ;j++);   }
void shift(dd)
  {unsigned char j=0;
	while(j<8){if((dd&0x80)!=0)sda=1;else sda=0;
				   clk=0; clk=1; dd<<=1;j++;}	}
//---------disp-----------
void display( )
{unsigned char i;
 for(i=0;i<=7;i++)
 {shift(ledk[i]);
   P20=i&0x04;P21=i&0x02;P22=i&0x01;P23=1;
   delay(15);
   }
 P23=0; 
} 
  
//---------------------------
void main(void)
 {P10=0; 
   while(1)
     {display(); }
  }