实现电子琴功能的c51单片机代码

//-------------------------------------------------
//名称：可演奏的电子琴

#include<reg51.h>
#include <intrins.h>
#define uint unsigned int
#define uchar unsigned char


uchar code tab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xbf};
//0123456789ABCDEF
uint code  music[]={64080,64684,64787,
                  64820,64898,64968,65030,65058,65010,65157,65578};//各音符对应的延时

sbit BEEP = P2^1;  //蜂鸣器
uchar KeyNO;       //按键序号
//-----------------------------------------------------------------------
//延时
//-------------------------------------------------------------------------
void delayms(unsigned int t)
{
unsigned int i,j;
for(i=0;i<t;i++)
for(j=0;j<120;j++)

}

void Keys_Scan()
{
  uchar Tmp,key;