#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit duan=P2^6;
sbit wei=P2^7;
unsigned char code table_wei[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char code table_duan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delay(uint m)
{
uint x,y;
for(x=m;x>0;x--)
for(y=110;y>0;y--);
}
void yan(uint a)
{
uint z;
for(z=a;z>0;z--)
{
duan=1;
P0=table_duan[z];
duan=0;
delay(1000);
}
}
void main()
{
uint i;
while(1)
{
P1=0x18;
delay(3000);
P1=0x10;
delay(2000);
P1=0xc0;
delay(3000);
P1=0x80;
delay(2000);
{
wei=1;
P0=0x55;
wei=0;
for(i=0;i<250;i++)
{
yan(5);
}
}
}
}
数码管要先设置位选，然后再设置段选，没看到你设置位选呢
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