POS收银，Linux下的超市POS机收银系统-POS cash register, Linux POS machine under the supermarket cash register system

后台管理功能主要用：商品分类管理、商品添加、商品修改、商品管理、**汇总、月汇总、年汇总、用户管理等，配合条码机、扫描枪、小票打印机等硬件使用，适合超市收银使-Background management functions are mainly used: Category management, commodity add, modify merchandise, merchandise management,** summary, monthly summary, annual summar