Video
Code
#include <REGX51.H>
#include<stdio.h>
#include<math.h>
#define bat 1
#define tat 0
#define data P2
/****************http://www.Chipkool.tk*********************/
sbit led1=P3^0;
sbit led2=P3^1;
sbit led3=P3^2;
sbit led4=P3^3;
/************** ma led****************/
int M[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
int num=0,donvi,chuc,tram,nghin;
/******************delay**************/
void delay(int ms)
{
int i,j;
for(i=0;i<ms;i++)
for(j=0;j<125;j++)
{
}
}
/***************chuyen ma**************/
void seg7(void)
{
nghin=num/1000;
tram=(num%1000)/100;
chuc=(num%100)/10;
donvi=num%10;
}
/**************hienthi*****************/
void hienthi(void)
{
data=M[nghin];
led1=bat;
delay(10);
led1=tat;
data=M[tram];
led2=bat;
delay(10);
led2=tat;
data=M[chuc];
led3=bat;
delay(10);
led3=tat;
data=M[donvi];
led4=bat;
delay(10);
led4=tat;
}
/**************ham chinh****************/
void main(void)
{
while(1)
{int k;
for(k=0;k<20;k++)
{
seg7();
hienthi();
}
num=num+1;
if(num==10000)
num=0;
}
}
(Pass:chipkool.tk)(No pass)
