完成一个简易的音乐播放器，可以完成上一曲，下一曲，顺序播放，停止，暂停和液晶显示，同时还增加了单曲循环播放功能。在理论分析的基础上，用VHDL语言编写源代码，再配合具体电路连接，实现对蜂鸣器振动的控制，以及对各项显示功能的切换控制等。-Complete a simple music player that can be completed on a next one, the order of play, stop, pause, and liquid crystal display, but also increased the single loop playback. In the theoretical analysis, based on the use of VHDL language source code, together with the specific circuit connections, to achieve the buzzer vibration control, and the display switching control.