该计算器有两个主要部分，标准计算器和科学计算器，科学计算器功能尚未完成。 用的知识：按钮，菜单，布局，面板，窗口，事件，对话框，标签，单选钮。 有兴趣的读者可以完成剩下的功能。 -The calculator has two main parts, the standard calculator and a scientific calculator, scientific calculator function has not been completed. Knowledge:

登录的用户和密码均为KJS,工资管理系统界面简单,让读者一目了然,-Login user and password are KJS, wages management system management system interface is simple, let the reader at a glance,

登录的用户和密码均为KJS,工资管理系统界面简单,让读者一目了然,-Login user and password are KJS, wages management system management system interface is simple, let the reader at a glance,