单片机控制，最消息统的外围拓展，原理图4-MCU control, the integration of the external expansion of the message, the principle Figure 4

该工程主要实现用FreeImage 打开任意图像，按比例显示在静态文本中，，并可用鼠标在上面任意画图-The project mainly achieve using the FreeImage open any image, any display static text, and mouse can be used in the above drawing proportionally