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#include <reg51.h>
#define uint unsigned int
#define uchar unsigned char
uchar table []={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar y1,e2,s3,num;
void delayms(uint k)
{
int i,j;
for(i=k;i>0;i--)
for(j=110;j>0;j--);
}
void key0() interrupt 1
{
num++;
if(num>255)
{
num=0;
}
}
void key1() interrupt 2
{
num--;
if(num<0)
{
num=255;
}
}
void display(uchar y1,uchar e2,uchar s3)
{
P2=0X01;
P0=~table[y1];
delayms(5);
P2=0X02;
P0=~table[e2];
delayms(5);
P2=0X04;
P0=~table[s3];
delayms(5);
}
void main()
{
TCON=0x05;
PX0=0;PX1=1;
IE=0x85;
while(1)
{
y1=num%1000/100;e2=num%100/10;s3=num%10;
display(y1,e2,s3);
}
}
附件有keil工程文件及proteus仿真原理图哦
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实验五.zip
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