//2個(gè)一起轉(zhuǎn)的話力矩會(huì)大一點(diǎn)，但不會(huì)改變頻率
#include "reg51.h"
#define uchar unsigned char 
uchar dianji[]={0x38,0x58,0x68,0x70};
uchar code display[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};
static temp;

void delay(uchar i) //25轉(zhuǎn)每分鐘
{  uchar k;
  for(;i>0;i--)
  for(k=220;k>0;k--);
}

void xianshi()
{ uchar gewei,shiwei;
  gewei=temp%10;
  shiwei=temp/10;
 
  P2=0x7f;
  P0=display[gewei];
  delay(50);
  P2=0xbf;
  P0=display[shiwei];
  delay(50);



}



void dianj()
{  uchar i,j;
   
   for(j=12;j>0;j--)   //轉(zhuǎn)一圈 
    { 
      for(i=0;i<3;i++)  //轉(zhuǎn)一個(gè)齒距, 7.5*4
		{ P1=dianji[i];
		  delay(200);
		}
    }
temp++;
}


void main()
{ 

  while(1)
  { dianj();
    xianshi(); 

  


  }
}