本论文主要基于AT89C52单片机进行的简易电子琴设计。通过LCD显示屏、喇叭、键盘等外部器件，使用按键实现各种音调和音符的输入，LCD显示屏进行被操作的按键显示，用放大电路实现低音频信号的功率放大，最后经过调试用喇叭播放相关音乐。-This paper is mainly based on simple flower design on AT89C52 conducted. Through the LCD display, speaker, keyboard, and other external devices, and using the keys to achieve the various note pitch input, LCD monitor to display the button is operated, the power amplifier circuit to achieve amplification of the low frequency signal, and finally through the speakers play debugging related music.