基于51單片機(jī)的秒表【10組，存儲，數(shù)碼管】（仿真）

smg2=P2^1;
sbit smg3=P2^2;
sbit smg4=P2^3;
sbit k1=P1^0;//按鈕
sbit k2=P1^1;
sbit k3=P1^2;
sbit k4=P1^3;
sbit k5=P1^4;
sbit beep=P1^7;//蜂鳴器
uchar code smgduan0[10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};//顯示0~9,無小數(shù)點(diǎn)
uchar code smgduan1[10]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10};//顯示0~9,有小數(shù)點(diǎn)
uchar time=0,mode=0,flag=0;//系統(tǒng)變量
uchar miao=0,fen=0;//計時
uchar set1=20,set2=0;//倒計時設(shè)置
uchar save1[]={0,0,0,0,0,0,0,0,0,0};//存儲
uchar save2[]={0,0,0,0,0,0,0,0,0,0};
uchar num=0,cha=0;//查看
uint beep_time=0;
//延時
void delay(uint i)
{
	while(i--);
}
//主函數(shù)
void main()
{
	uchar k=0;
	TMOD|=0X11;//初始化定時器
	TH0=0X3C;
	TL0=0XB0;
	TH1=(65536-1000)/256;
	TL1=(65536-1000)%256;
	ET1=1;
	TR1=1;
	ET0=1;//打開定時器0中斷允許
	EA=1;//打開總中斷
	TR0=1;//打開定時器
	while(1)
	{
		if(mode==0)//正計數(shù)模式
		{
			if(!k1 &&(k!=1))//設(shè)置
			{
				k=1;
				if(mode!=3)
					mode=3;
				else
					mode=0;
			}
			if(!k2 && (k!=2)) //計數(shù)控制
			{
				k=2;
				if(flag<2)
					flag++;
				else
					flag=0;
				if(flag==0)
				{
					miao=0;
					fen=0;
				}
			}
			if(!k3 &&(k!=3))//倒計數(shù)
			{
				k=3;
				mode=1;
				miao=set1;fen=set2;
			}
			if(!k4 &&(k!=4))//存儲
			{
				k=4;
				save1[num]=fen;
				save2[num]=miao;
				if(num<9)
					num++;
				else
					num=0;
			}
			if(!k5 &&(k!=5))//查看
			{
				k=5;
				mode=2;
				cha=0;				
			}
		} 
		if(mode==1)//倒計數(shù)模式
		{
			if(!k1 &&(k!=1))//設(shè)置
			{
				k=1;
				if(mode!=3)
					mode=3;
				else
					mode=0;
			}
			if(!k2 && (k!=2)) //正計數(shù)
			{
				k=2;
				mode=0;flag=0;
				miao=0;
				fen=0;
			}
			if(!k3 && (k!=3)) //計數(shù)控制
			{
				k=3;
				if(flag<2)
					flag++;
				else
					flag=0;
				if(flag==0)
				{
					miao=set1;fen=set2;
				}
			}
			if(!k4 &&(k!=4))//存儲
			{
				k=4;
				save1[num]=fen;
				save2[num]=miao;
				if(num<9)
					num++;
				else
					num=0;
			}
			if(!k5 &&(k!=5))//查看
			{
				k=5;
				mode=2;
				cha=0;
			}
		}
		if(mode==2)//查看
		{
			if(!k5 &&(k!=5))//下一個
			{

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