根据PC机内的扬声器的发声原理论述它产生语音的思想和方法-According to PC-speaker audible within it have a voice on the principle of thought and methods

在turbo c中，程序中利用PC喇叭实现背景音乐的讨论。-In turbo c, the program achieved using the PC speaker to discuss the background music.

在turbo C 下写个一个倒计时时钟，最后5秒PC喇叭会发出声音提示，属于c语言高级编程。-Write in turbo C under a countdown clock, the last 5 seconds the PC speaker will sound to prompt, high-level programming language is c.