C52单片机原理图以及按下按键加减0到16

ID:423217 · 发表于 2018-11-8 20:30

#include "reg51.h" //包含头文件reg51.h，定义了51单片机的专用寄存器
sbit k1=P2^7;
sbit k2=P2^6;
sbit k3=P2^5;
sbit k4=P2^4;
sbit k5=P2^3;
sbit k6=P2^2;
sbit k7=P2^1;
sbit k8=P2^0;
char code table1[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};//阳极静态数码管的16进制编码
char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x83,0xc6,0xa1,0x86,0x8e};//阴极动态数码管的16进制编码
//附属函数专区开始
void yanchi(unsigned int ms) //延时代码 - 函数定义
{
unsigned int x,y;
for(x=ms;x>0;x--)
for(y=110;y>0;y--);
}
void main() //主函数
{ unsigned char i=0;
P0=0x00;
while(1)
{
if(k1==0)//按下按键k1
{
yanchi(10);
if(k1==0) //确认按下按键k1
{
i++;
}while(!k1);
}
if(k2==0)//按下按键k2
{
yanchi(10);
if(k2==0) //确认按下按键k2
{
i--;
}while(!k2);
}P0=table[i];
}
}

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