下面是源代码
#include<reg51.h>
#define uchar unsigned char//数码管段选,锁存器控制信号
sbit dula=P2^6;//数码管位选,锁存器控制信号
sbit wela=P2^7;
unsigned char j,k;/*定义数码管显示字符跟数字的对应数组关系*/
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};//数码管显示编码(0~F)/*1ms为单位的延时程序
void delay(uchar x)
uchar j;
while(x--)
for(j=0;j<125;j++);
void main()
uchar i=0;
PO=0xCO;//数码管位选
wela=1;
wela=0;
while(1)
PO=table[i];//送数字8到段码端口dula=1;
dula=0;
delay(200);
delay(200);
i++;
if(i>=16)
i=0; |