第1个回答 2013-12-12
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned intsbit BEEP = P3^7;
uchar code SONG_TONE[]=
{
212,212,190,212,159,169,212,212,190,212,142,159,212,212,106,126,129,169,190,119,119,126,159,142,159,0
};
uchar code SONG_LONG[]=
{
9,3,12,12,12,24,9,3,12,12,12,24,9,3,12,12,12,12,12,9,3,12,12,12,24,0
};void DelayMS(uint ms)
{
uchar t;
while(ms--)
{
for(t=0;t<120;t++);
}
}void PlayMusic()
{
uint i =0,j,k;
while(SONG_LONG[i]!=0||SONG_TONE[i]!=0)
{
for(j=0;j<SONG_LONG[i]*20;j++)
{
BEEP = ~BEEP;
for(k=0;k<SONG_TONE[i]/3;k++);
}
DelayMS(10);
i++;
}
}void main()
{
while(1)
{
PlayMusic();
DelayMS(500);
}
}本回答被网友采纳