用定時(shí)器以間隔500MS在6位數(shù)碼管上依次顯示0、1、2、3….C、D、E、F，重復(fù)沒有鎖存器

ID:285368 · 發(fā)表于 2018-2-25 11:51

#include<reg52.h>

unsigned char shumaguan[16]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
unsigned char time_num;
unsigned int time;

void delay(unsigned int i)
{
while(i--);
}
void main()
{
time_num=0;
time=0;

TMOD=1;
TH0=0xec;
TL0=0x77;
ET0=1;
EA=1;
TR0=1;

while(1)
  {
P0=shumaguan[time];
  }
}
void timer0()interrupt 1
{
TH0=0xec;
TL0=0x77;
time_num++;
if(time_num==50)
{
   time_num=0;
   time++;
   if(time==16)
   {
      time=0;
   }
}
}    //有警告