【51单片机实现0-7和8-1循环显示共阴数码管】2023-5-12

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缘由https://ask.csdn.net/questions/7942557

#include "reg52.h"
unsigned char code ShuMaGuan[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x00,0X80,64};//0~9隐.小数点-号
void main()
{
	unsigned char w=0,x=8,ys=0,sy=0;
	bit k=0;
	while(1)
	if(++ys==0)
	{
		P0=P1=255;
		if(!w)++w;
		P1=~w;
		w*=2;
		P0=ShuMaGuan[x-1];
		--x;
		if(!x)x=8;
	}
}

 把之上基本的演化为自动循环的，数码管驱动编写原则是：消隐、送位值、送段值、延时。

#include "reg52.h"
unsigned char code ShuMaGuan[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x00,0X80,64};//0~9隐.小数点-号
void main()
{//缘由https://ask.csdn.net/questions/7942557
	unsigned char w=0,x=8,ys=0,sy=0,m=0;
	bit k=0;
	while(1)
	if(++ys==0)
	{
		P0=P1=255;
		if(!w)++w;
		P1=~w;
		w*=2;
		P0=ShuMaGuan[k?x:x-1];
		if(!k)--x;else ++x;
		if(!k)if(!x)x=8;else;else if(x>8)x=1;else;
		if(++sy==0)if(++m>7){m=0;k=!k;if(k)x=1;else x=8;}
	}
}

坚决捍卫人类平安，严惩自招暴力肇事。