【Proteus仿真】51单片机按键控制数码管加减

【Proteus仿真】51单片机按键控制数码管加减

  • 📺Proteus仿真演示：
    在这里插入图片描述

📋采用的是8位数码管，实际上只使用了3位数码管用来显示。

📝实例代码

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#include <reg52.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int

uchar code DSY_CODE[]=
{
    0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff
};//共阳数码管断码
uchar Num_Buffer[] = {0,0,0};
uchar Key_Code,Key_Counts=0;

void DelayMS(uint x)
{
    uchar t;
    while(x--)
    {
        for(t=0; t<120; t++);
    }
}

void Show\_Counts\_ON\_DSY()
{
    uchar i,j=0x01;
    Num_Buffer[2]=Key_Counts/100;
    Num_Buffer[1]=Key_Counts/10%10;
    Num_Buffer[0]=Key_Counts%10;
    for(i=0; i<3; i++)
    {
        j = \_cror\_(j,1);
        P2 = j;
        P0 = DSY_CODE[Num_Buffer[i]];
        DelayMS(5);
			    P2 = 0x00;//消隐
    }
		
}

void main()
{
    uchar i;
    P0 = 0xff;
    P1 = 0xff;
    P2 = 0x00;
    Key_Code = 0xff;
    while(1)
    {
        Show\_Counts\_ON\_DSY();
        P1 = 0xff;
        Key_Code = P1;
        if(Key_Code != 0xff)
        {
            for(i=0; i<30; i++)
            {
                Show\_Counts\_ON\_DSY();
            }
        }
        switch(Key_Code)
        {
        case 0xfe:
            if(Key_Counts<255) Key_Counts++;
            break;
        case 0xfd:
            if(Key_Counts>0)	 Key_Counts--;
            break;
        case 0xfb:
            Key_Counts=0;
        }
        Key_Code = 0xff;
    }
}

📚程序源码和仿真资源

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链接：https://pan.baidu.com/s/1KQQje51fgE966knzK8-TkQ 
提取码：1bbq