#include??
#define?uint?unsigned?int?
#define?uchar?unsigned?char
#define?output?P1
#define?input?P1

enum?KEY{key0key1key2key3key4key5key6key7key8key9key10key11key12key13key14key15};
uchar?code?table[]={				?
	????0x3f0x060x5b0x4f0x660x6d0x7d0x07
	????0x7f0x6f0x770x7c0x390x5e0x790x710x00};
unsigned?int?code?Freqtab[]?=?{?	
?????64021641036426064400??????
?????64524645806468464777??????
?????64820648986496865030??????
?????65058651106515765178};?????
uint?FreqTemp;

sbit?SPEAK?=?P3^7;
void?delay1ms（uint?n）???
{
????uint?abc;
	for（c=n;c>0;c--）
????	for（b=199;b>0;b--）
????????	for（a=1;a>0;a--）;
}
?
uint?key_input（void）
{
	uchar?temp1temp2;			
	uchar?num?=?16;			???	
	output?=?0x0f;		
???	temp1?=?input;				
	if（0x0f?!=?temp1）???		
	{				???	
		delay1ms（5）;			
		temp1?=?input;			
		if（0x0f?!=?temp1）		
		{
			temp1?=?temp1?&?0x0f;	
			output?=?0xf0;		
			delay1ms（1）;			
			temp2?=?input;		
			temp2?=?temp2?&?0xf0;	
			temp1?=?temp1?|?temp2;	
		}
	}
	switch（temp1）
	{
		case?0xee:num=0;break;??
????????case?0xde:num=1;break;??
????????case?0xbe:num=2;break;???
????????case?0x7e:num=3;break;?
		case?0xed:num=4;break;???????????????
????????case?0xdd:num=5;break;???????????
????????case?0xbd:num=6;break;?????????????
????????case?0x7d:num=7;break;???
		case?0xeb:num=8;break;????
????????case?0xdb:num=9;break;????
????????case?0xbb:num=10;break;???
????????case?0x7b:num=11;break;????
		case?0xe7:num=12;break;???
????????case?0xd7:num=13;break;???
????????case?0xb7:num=14;break;????
????????case?0x77:num=15;break;??????
		default:break;
	}
	return?num;
}
void?T0_INT（void）?interrupt?1
{
?????TL0?=?FreqTemp;????????????????
?????TH0?=?FreqTemp?>>?8;
?????SPEAK?=?~SPEAK;?????????????????
}?
int?main（）
{
	TMOD?=?0X01;		
	EA?=?1;
	ET0?=?1;
	TR0?=?0;
	while（1）
	{
		uint?numtemp;
		num?=?key_input（）;
		temp?=?num;
		P0?=?table[num];
		if（16?!=?num）
		{
			FreqTemp?=?Freqtab[num];
			TR0?=?1;
			while（0xf0?!=?output）;		
			TR0?=?0;
			SPEAK?=?1;	
		}		
	}
	return?0;
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-12-22?14:45??電子琴\
?????文件????????9680??2018-12-22?12:03??電子琴\Backup?Of?New?Project.pdsbak
?????目錄???????????0??2018-12-22?09:04??電子琴\Listings\
?????文件???????14156??2018-12-22?09:04??電子琴\Listings\STARTUP.lst
?????文件????????4721??2018-12-22?09:04??電子琴\Listings\electronic?organ.lst
?????文件????????9067??2018-12-22?09:04??電子琴\Listings\electronic?organ.m51
?????文件????????9677??2018-12-22?12:03??電子琴\New?Project.pdsprj
?????文件????????2198??2018-12-22?12:03??電子琴\New?Project.pdsprj.LAPTOP-B59USNJL.李博文.workspace
?????目錄???????????0??2018-12-22?09:04??電子琴\objects\
?????文件?????????828??2018-12-22?09:04??電子琴\objects\STARTUP.obj
?????文件????????6490??2018-12-22?09:04??電子琴\objects\electronic?organ
?????文件????????1121??2018-12-22?09:04??電子琴\objects\electronic?organ.build_log.htm
?????文件????????1340??2018-12-22?09:04??電子琴\objects\electronic?organ.hex
?????文件?????????135??2018-12-22?09:04??電子琴\objects\electronic?organ.lnp
?????文件????????6660??2018-12-22?09:04??電子琴\objects\electronic?organ.obj
?????文件????????6376??2016-03-14?08:58??電子琴\STARTUP.A51
?????文件????????2140??2018-12-22?09:04??電子琴\electronic?organ.c
?????文件???????85192??2018-12-22?14:45??電子琴\electronic?organ.uvgui.李博文
?????文件????????5478??2018-12-22?09:12??電子琴\electronic?organ.uvopt
?????文件???????14064??2018-12-22?09:12??電子琴\electronic?organ.uvproj