基于51单片机的8位数码管显示的可调时电子时钟

本人大二本科生，第一次发东西，功能比较简单，代码有点复杂，希望能有大神指正。

1. 基于51单片机的不可调时间的时钟显示，晶振为11.0592MHZ，60HZ左右刷新一次，用了两个定时器，定时器0负责LED循环显示，定时器1负责定时，大概200秒左右落后1秒。

#include <REGX51.H>
#include <intrins.h>
void begin();
void ledshow();
unsigned char number[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x40};
unsigned char wei[]={0xe3,0xe7,0xeb,0xef,0xf3,0xf7,0xfb,0xff};
unsigned char num[8];
unsigned char hour,min,sec;
int main(){
	begin();
	hour=8;
	min=56;
	sec=00;
	while(1){
		ledshow();
	}
}

void begin(){
	TMOD &= 0xF0;		//???????
	TL0 = 0x18;		//??????
	TH0 = 0xC4;		//??????
	TF0 = 0;		//??TF0??
	TR0 = 1;		//???0????

	TMOD &= 0x0F;		//???????
	TMOD |= 0x10;		//???????
	TL1 = 0x00;		//??????
	TH1 = 0xF7;		//??????
	TF1 = 0;		//??TF1??
	TR1 = 1;		//???1????

	EA=1;
	ET0=1;
	ET1=1;
}

void ledshow(){
	num[0]=number[hour/10];
	num[1]=number[hour%10];
	num[2]=~number[10];
	num[3]=number[min/10];
	num[4]=number[min%10];
	num[5]=~number[10];
	num[6]=number[sec/10];
	num[7]=number[sec%10];
}

void BBBBBBBB() interrupt 1{
	static char i=0;
	TL0 = 0x18;		//??????
	TH0 = 0xC4;		//??????
	P0=0;
	P2=~wei[i];
	P0=~num[i];
	i++;
	if(i>7){
		i=0;
	}
}
void AAAAAAAA() interrupt 3{
	static unsigned int n=0;
	TL1 = 0x00;		//??????
	TH1 = 0xF7;		//??????
	n++;
	if(n==400){
		n=0;
		sec++;
		if(sec==60){
			sec=0;
			min++;
			if(min==60){
				min=0;
				hour++;	
				if(hour==24){
					hour=0;
				}
			}
		}
	}
}

2.第二段代码为可调电子时钟，K1负责退出选位操作，K2负责选位，K3负责加1，K4负责减1.看

#include <REGX52.H>
#include <intrins.h>
void begin();
void ledshow();
char keymode();
void Delay10ms();
void Delay2080us();
void K2(char i);
void K3();
void K4();
unsigned char number[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x40};
unsigned char wei[]={0xe3,0xe7,0xeb,0xef,0xf3,0xf7,0xfb,0xff};
unsigned char num[8];
char hour,min,sec;
char x=2;
sbit key_1=P3^1;
sbit key_2=P3^0;
sbit key_3=P3^2;
sbit key_4=P3^3;
int main(){
	unsigned char key,i=0;
	begin();
	hour=11;
	min=11;
	sec=11;
	
	while(1){
		ledshow();
		if(keymode()==1){
			key=1;
		}
		if(keymode()==2){
			key=2;
			switch(x){
				case 0:i=1;break;
				case 1:i=4;break;
				case 2:i=7;break;
			}
		}

		switch(key){
			case 1: ET0=1;break;
			case 2: ET0=0;K3();K4();K2(i); break;
			default:ET0=1;
		}
	}
}

void begin(){
	TMOD &= 0xF0;		//???????
	TL0 = 0x18;		//??????
	TH0 = 0xC4;		//??????
	TF0 = 0;		//??TF0??
	TR0 = 1;		//???0

	TMOD &= 0x0F;		//???????
	TMOD |= 0x10;		//???????
	TL1 = 0x00;		//??????
	TH1 = 0xF7;		//??????
	TF1 = 0;		//??TF1??
	TR1 = 1;		//???1????

	EA=1;
	ET0=1;
	ET1=1;
}

char keymode(){
	char key;
	if(key_1==0){
		Delay10ms();
		if(key_1==0){
			while(key_1==0);
			key=1;
		}
	}
	else if(key_2==0){
		Delay10ms();
		if(key_2==0){
			while(key_2==0);
			key=2;	
			x++;
			if(x>2){
				x=0;
			}
		}
	}
	return key;
}

void K2(char i){
	static char j=0;
	static char t;
	t++;
	if(t/100==1){
		if(j==i||j+1==i){
			P0=0;
			P2=~wei[j];
		}
		else{
			P0=0;
			P2=~wei[j];
			P0=~num[j];
		}
	}
	else{
		P0=0;
		P2=~wei[j];
		P0=~num[j];
	}
	if(t>200){
		t=0;
	}
	j++;
	if(j>7){
		j=0;
	}
	Delay2080us();
}

void K3(){
	if(key_3==0){
		Delay10ms();
		if(key_3==0){
			while(key_3==0);		
			if(x==0){
				hour++;
				if(hour>23){
					hour=0;
				}
			}
			if(x==1){
				min++;
				if(min>59){
					min=0;
				}
			}
			if(x==2){
				sec++;
				if(sec>59){
					sec=0;
				}
			}	
		}
	}
}
void K4(){
	if(key_4==0){
		Delay10ms();
		if(key_4==0){
			while(key_4==0);	
			if(x==0){
				hour--;
				if(hour<0){
					hour=23;
				}
			}
			if(x==1){
				min--;
				if(min<0){
					min=59;
				}
			}
			if(x==2){
				sec--;
				if(sec<0){
					sec=59;
				}
			}
		}
	}
}
	
void ledshow(){
	num[0]=number[hour/10];
	num[1]=number[hour%10];
	num[2]=~number[10];
	num[3]=number[min/10];
	num[4]=number[min%10];
	num[5]=~number[10];
	num[6]=number[sec/10];
	num[7]=number[sec%10];
}

void Delay10ms()		//@11.0592MHz
{
	unsigned char i, j;

	i = 18;
	j = 235;
	do
	{
		while (--j);
	} while (--i);
}
void Delay2080us()		//@11.0592MHz
{
	unsigned char i, j;

	i = 4;
	j = 183;
	do
	{
		while (--j);
	} while (--i);
}

void BBBBBBBB() interrupt 1{
	static char i=0;
	TL0 = 0x18;		//??????
	TH0 = 0xC4;		//??????
	P0=0;
	P2=~wei[i];
	P0=~num[i];
	i++;
	if(i>7){
		i=0;
	}
}
void AAAAAAAA() interrupt 3{
	static unsigned int n=0;
	TL1 = 0x00;		//??????
	TH1 = 0xF7;		//??????
	n++;
	if(n==398){
		n=0;
		sec++;
		if(sec>=60){
			sec=0;
			min++;
			if(min>=60){
				min=0;
				hour++;	
				if(hour>=24){
					hour=0;
				}
			}
		}
	}
}