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將從外部輸入IO口的數(shù)據(jù)轉(zhuǎn)為10進(jìn)制數(shù)，顯示在數(shù)碼管上
我不知道怎樣將IO口的數(shù)據(jù)讀入
求各位大俠幫小弟看看后面改怎么寫(xiě)，怎么改
謝謝各位大俠！！
#include<reg52.h>
#include<string.h>
#define uchar unsigned char
#define uint unsigned int
sbit a1=P3^0;
sbit a2=P3^1;
sbit a3=P3^2;
sbit a4=P3^3;
sbit a5=P3^4;
sbit a6=P3^5;
sbit a7=P3^6;
sbit a8=P3^7;
sbit a9=P0^0;
sbit a10=P0^1;
sbit a11=P0^2;
sbit a12=P0^3;
sbit a13=P0^4;
sbit a14=P0^5;
uchar code tabledu[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x40,0x80,0x00};
uchar count,wang,qin,bai,shi,ge;
uint temp,aa,n,j,i,t=0,p=1;
char a[50];
//延遲函數(shù)
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
//初始化函數(shù)
void init()
{
TMOD=0x01; //定時(shí)器T0為工作方式1
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
ET0=1;
EA=1; //開(kāi)啟總中斷
TR0=1; //啟動(dòng)定時(shí)器
count=0;
}
//顯示函數(shù)
void display(uchar wang,uchar qin,uchar bai,uchar shi,uchar ge){
P2=tabledu[wang];
P1=0x00;
delay(1);
P2=tabledu[qin];
P1=0x01;
delay(1);
P2=tabledu[bai];
P1=0x02;
delay(1);
P2=tabledu[shi];
P1=0x03;
delay(1);
P2=tabledu[ge];
P1=0x04;
delay(1);
}
void main()
{
init();
char a[50]; //將2進(jìn)制數(shù)轉(zhuǎn)為10進(jìn)制數(shù)
gets(a);
n=strlen(a);
for(i=n-1;i>=0;i--)
{
p=1;
t=(a-48);
if(i==n-1)
{
p=1;
}
else
{
for(j=0;j<n-i-1;j++)
{
p=p*2;
}
}
temp+=t*p;
}
、
while(1){
if(count==10){
count=0;
wang=temp/10000;
qin=temp%10000/1000;
bai=temp%10000%1000/100;
shi=temp%10000%1000%100/10;
ge=temp%10;
}
display(wang,qin,bai,shi,ge); //調(diào)用顯示函數(shù)
}
}
void timer0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
count++;
} | 
