基于QT的超市无线查询系统，分为客户端和服务器，中间使用ZIGBEE无线模块传输数据，客户端在2440开发板上，使用SQLITE数据库，服务器使用MYSQL，所有界面部分使用代码完成，没有使用UI设计-Supermarket wireless query system based on the QT, divided into client and server, in the middle ZIGBEE wireless module to transfer data, and client

NetSim is a wireless network simulator. NetSim is primarily designed for use by developers of the network stacks. It can also be used for initial design, development and debugging of the final applications, but its use in this capacity may be limited