四位一体共阳级数码管动态显示c语言编程

2025-03-15 18:16:57
推荐回答(2个)
回答1:

//满意请采纳
//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 charLEDbuff[]={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)
         {
                   case0: SEG_bit_1 = 0;SEG_bit_4 = 1;P1=LEDbuff[0];i++;break;
                   case1: SEG_bit_4 = 0;SEG_bit_3 = 1;P1=LEDbuff[1];i++;break;
                   case2: SEG_bit_3 = 0;SEG_bit_2 = 1;P1=LEDbuff[2]&;i++;break;
                   case3: SEG_bit_2 = 0;SEG_bit_1 = 1;P1=LEDbuff[3];i=0;break;
                   default:break;
         }
 
}
/************************************************
void serial_init()
 {
         //TMOD= 0x20;       //定时器T/C1工作方式2
         SCON= 0x50;   //串口工作方式1,允许串口接收(SCON = 0x40 时禁止串口接收)
         TH1= 0xF3;      //定时器初值高8位设置
         TL1= 0xF3;       //定时器初值低8位设置
         PCON= 0x80;  //波特率倍频(屏蔽本句波特率为2400)
         TR1= 1;   //定时器启动   
  }
 **********************************************/
void main()
{       
   //serial_init();   //串口初始化
 
         //TMOD=0x21;/*设置定时器*/
         TMOD=0x01;
         TH0=0xfc;
         TL0=0x18;
         TR0=1;
        
         EA=1;/*设置中断*/
         ET0=1;
 
         while(1)
         {
                   if(0==TF0)
                   {
                            if(cnt>=1000)
                            {
                                     cnt=0;
                                     sec++;
                                     if(sec>=60) {
                                       sec=0;mini++;
                                       if (mini>=60) {
                                       mini=0;hour++;
                                       if (hour>=24) hour=0;
                                     }
                                     }
                                    
                                     LEDbuff[0]=LED[sec%10];//*设置数码管显示位*/
                                     LEDbuff[1]=LED[sec/10%10];
                                     LEDbuff[2]=LED[mini%10];
                                     LEDbuff[3]=LED[mini/10%10];
         //TI=1;    //使用printf函数前须先将发送标志位TI置1
   // printf("%4d %x ,%x %x\n ",sec,LEDbuff[0],LEDbuff[1],LEDbuff[2]);
   // TI=0;
 
                            }
                   }
         }                
}

回答2:

百度文库很多,随便搜一下

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