用51单片机蜂鸣器写一段小星星歌曲的代码

以下是用51单片机蜂鸣器写一段小星星歌曲的代码：

#include <reg52.h> // 引入单片机头文件

sbit beep = P1^5; // 定义蜂鸣器引脚

void delay(unsigned int i) // 延时函数
{
    while(i--);
}

void main()
{
    unsigned char k = 0; // 定义计数器

    while(1)
    {
        switch(k)
        {
            case 0: beep = 0; delay(20000); break;
            case 1: beep = 1; delay(10000); break;
            case 2: beep = 0; delay(10000); break;
            case 3: beep = 1; delay(10000); break;
            case 4: beep = 0; delay(10000); break;
            case 5: beep = 1; delay(10000); break;
            case 6: beep = 0; delay(10000); break;
            case 7: beep = 1; delay(20000); break;
            case 8: beep = 0; delay(10000); break;
            case 9: beep = 1; delay(10000); break;
            case 10: beep = 0; delay(10000); break;
            case 11: beep = 1; delay(10000); break;
            case 12: beep = 0; delay(10000); break;
            case 13: beep = 1; delay(10000); break;
            case 14: beep = 0; delay(20000); break;
        }

        k++;

        if(k == 15) // 播放完毕后重置计数器
        {
            k = 0;
        }
    }
}

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