模拟超市POS系统,实现了其基本功能，不过只是单机版的，没有实现分布式。,Simulated supermarket POS systems, has achieved its basic functions, but only stand-alone, with no realization of a distributed.

价值18万的分布式网络购物系统，现将源码上传-The value of 180,000 to the distributed network system, The source upload