一个有功能键的查询数据的简单VI，能够实现上下查询，最前最后查询和定位查询-A query data with function keys simple VI, to achieve vertical queries, query and locate the best last query

一个简单的登陆界面，能实现登陆、新用户注册功能。登陆后是一个计算器，用户可进行简单计算，计算结果和登陆信息可查询。-A simple login screen, to achieve landing, new user registration feature. After landing a calculator, the user can perform simple calculations, calculations and login information can be found.