代码：#include<reg51.h>#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit ST=P2^0;
sbit OE=P2^2;
sbit ALE=P2^3;
sbit EOC=P2^1;
sbit CLK=P2^4;
long int datas,bai,she,ge;
uchar duan;
uchar code num[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar code num_dot[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed};
uchar code wei[]={0x0d,0x0b,0x07};
void delay(uint z)
{
uchar i;
while(z--)
for(i=0;i<120;i++);
}
void display()
{
uchar i=0;
bai=(datas*500/255)/100;
she=(datas*500/255)/10 % 10;
ge=(datas*500/255) % 10;
for(i=0;i<3;i++)
{
P3=wei[i];
if(i==0){duan=num_dot[bai];}
else if(i==1){duan=num[she];}
else if(i==2){duan=num[ge];}
P0=duan;
delay(2);
}
}
void main()
{
TMOD=0x02;
TH0=0x216;
TL0=0x216;
EA=1;
ET0=1;
TR0=1;
while(1)
{
ST=OE=0;
ALE=1;
ST=1;
ALE=0;
ST=0;
while(!EOC);
OE=1;
datas=P1;
display();
}
}
void inter_1() interrupt 1
{
CLK=~CLK;
}
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