用51单片机做的拉幕式数码显示课程设计

                               0x66,0x6d,0x7d,0x07,

                               0x7f,0x6f,0x77,0x7c,

                               0x39,0x5e,0x79,0x71,0x00};

unsigned char dispbitcode[]={0xf8,0xf9,0xfa,0xfb,

                             0xfc,0xfd,0xfe,0xff};

unsigned char dispbuf[8]={16,16,16,16,16,16,16,16};

unsigned char dispbitcnt;

unsigned int t02scnt;

unsigned char t5mscnt;

unsigned char u;

unsigned char i;

void main(void)

{

  TMOD=0x02;

  TH0=0x06;

  TL0=0x06;

  TR0=1;

  ET0=1;

  EA=1;

  while(1);

}

void t0(void) interrupt 1 using 0

{

  t5mscnt++;

  if(t5mscnt==4)

    {

      t5mscnt=0;

      P0=dispcode[dispbuf[dispbitcnt]];

      P1=dispbitcode[dispbitcnt];

      dispbitcnt++;

      if(dispbitcnt==8)

        {

          dispbitcnt=0;

        }

    }

  t02scnt++;

  if(t02scnt==1600)

    {

      t02scnt=0;

      u++;

      if(u==9)

        {

          u=0;

        }

      for(i=0;i<8;i++)

        {

          dispbuf[i]=16;

        }

      for(i=0;i<u;i++)

        {

          dispbuf[i]=8;

        }

    }

}

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本文关键字：单片机  课程  自动控制-单片机，电子制作 - 自动控制-单片机