#include<reg51.h>
sbit wela=P2^7;
sbit dula=P2^6;
sbit dawr=P3^6;
sbit csda=P3^2;
unsigned char a,j,k;
void delay(unsigned char i)
{
for(j=i;j>0;j--)
for(k=125;k>0;k--);
}
void main()
{
wela=0;
dula=0;
csda=0;
a=0;
dawr=0;
while(1)
{
P0=a;
// dawr=1;
delay(50);
// delay(200);
// delay(200);
// delay(200);
a++;
}
//wela=0;
//P0=0xff;
//wela=1;
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