两位数码管动态显示c语言程序 四位数码管动态显示c语言程序

//这是一个四位数码管动态显示c语言程序，每隔一秒加一，直至加到9999为止//使用时需采用锁存器

#include

#include"stdio.h"

unsigned char code LED[]={0xc0, 0xf9, 0xa4, 0xb0, 0x99, 0x92, 0x82, 0xf8, 0x80, 0x90}; unsigned char LEDbuff[]={0xff,0xff,0xff,0xff};

//定义数码管的位选段

sbit SEG_bit_1 = P0^1;

sbit SEG_bit_2 = P0^2;

sbit SEG_bit_3 = P0^3;

sbit SEG_bit_4 = P0^4;

unsigned int cnt=0;

unsigned int sec =0;

unsigned int mini=0;

unsigned int hour=0;

unsigned char i=0;

/*void delay(unsigned int z )

{

unsigned int x,y;

for(x=z;x>0;x--)

for(y=110;y>0;y--);

}

*/

void interrupttimer0() interrupt 1 /*设置中断函数*/

{

TH0=0xfc;

TL0=0x18;

cnt++;

//P1=0x80;

//delay(1);

switch(i)

{

case 0: SEG_bit_1 = 0;SEG_bit_4 = 1;P1=LEDbuff[0];i++;break;

case 1: SEG_bit_4 = 0;SEG_bit_3 = 1;P1=LEDbuff[1];i++;break;

case 2: SEG_bit_3 = 0;SEG_bit_2 = 1;P1=LEDbuff[2]&;i++;break;

case 3: SEG_bit_2 = 0;SEG_bit_1 = 1;P1=LEDbuff[3];i=0;break;

default:break;

}

}

/************************************************

void serial_init()

{