餐厅点菜系统，分为客户端和服务器两端。方便一个中形规模的餐厅，减少成本-Restaurant a la carte system, divided into client and server on both ends. Convenient in shape and size of a restaurant, to reduce costs

The robotics platform Lego Mindstorms NXT is more than a simple toy. It allows the building of robots with advanced behaviour, with several motors and various sensors. Nevertheless, embedded processing power, memory, and communication capabilities ar