电路图 里面有许多实用电路图 51编程器电路图 51单片机LED点阵电子显示屏的设计电路图 89C51单片机号音自动播放器的设计 单片机看门狗电路图 单片机控制的带语音报数功能的抢答器-There are many practical circuit diagram circuit diagram circuit diagram 51 of programmer 51 Single-chip LED dot matrix display design of electronic circu

电子演示板,可在上面用鼠标写字和画画,便于教学.-Electron demo board can be in the above write and draw with the mouse, easy to teaching.

电路板绘制程序的源码，电子相关专业经常用到。-Circuit board of the source drawing program, often used in electron-related major.