这次实验是电子音调发生器，首先我们要了解发声的原理，节拍和频率的关系。所有音乐都是由各个不同频率的音阶和其延续时间的长短来实现的。不同的音乐是由不同的音阶按某种排列播放一定的时间而形成的。将各音阶和其延续时间分别存放在数据段中，然后根据不同的按键选择不同的音阶和时间表，在用计数器产生该音阶频率，然后通过蜂鸣器发音。-This experiment is the electronic tone generator, we need to understand the principle, rhythm and frequency of sound. All the music by various frequency scales and the length of duration. The music is arranged to play a certain amount of time formed by the different scales according to some. Scale and its duration were stored in the data segment, and then depending on the button to select a different scale and timetable of the scale frequency counter, and then through the buzzer pronunciation.