#include <reg51.h>
sbit dula=P2^6; //段选信号的锁存器控制
sbit wela=P2^7; //位选信号的锁存器控制
unsigned char code table[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
//数码管各位的码表
void delay(unsigned int i)
{
unsigned int m,n;
for(m=i;m>0;m--)
for(n=90;n>0;n--);
}
void main()
{
unsigned char num;
while(1)
{
for(num=0;num<8;num++)
{
P0=table[num];
wela=1;
wela=0;
P0=0x4f; //数字“3”的代码
dula=1;
dula=0;
delay(1000);
}
}
}
|
