基于51的數(shù)字電壓表代碼

#include<reg52.h>
#include<intrins.h>
sbit EOC=P2^6;
sbit START=P2^5;
sbit OE=P2^7;
sbit CLK=P2^4;
long int a;
int b,c,d,e,f,g;
unsigned char code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//共陽極顯示0~9
unsigned char code table1[]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10};//共陽極顯示帶小數(shù)點(diǎn)0~9
void delay_display(unsigned int z)
{
  unsigned int x,y;
for(x=z;x>0;x--)
  for(y=110;y>0;y--);
}
void ADC0808()
{         
  if(!EOC)
{
START=0;
START=1;
START=0;
}
while(!EOC);
START=1;
START=0;
while(EOC);
}
void bianma()
{
  START=0;
ADC0808();
a=P1*100;
a=a/51;
}
void yima()
{
b=a/1000;
c=a-b*1000;
d=c/100;
e=c-d*100;
f=e/10;
g=e-f*10;
}
void display()
{
P2=0xf1;
P0=table[b];
delay_display(1);   
P2=0xf2;
P0=table1[d];
delay_display(1);   

P2=0xf4;
P0=table[f];
delay_display(1);
P2=0xf8;
P0=table[g];
delay_display(1);
}
void main()
{
EA=1;
TMOD=0x02;
TH0=216;
TL0=216;
TR0=1;
ET0=1;
while(1)
{
  bianma();
  yima();
  display();
}
}
void t0() interrupt 1 using 0
{
CLK=~CLK ;
}