它是在DOS环境下开发的数学计算软件，菜单中主要的一种是“有限元法”，使用的编程语言是C语言，解压无需密码。-It is the DOS environment to develop a mathematical calculation software, the main menu is a "finite element method", the use of the C programming language is the language, extract no p

用java编程语言实现计算器的基本运算功能，包括加、减、乘、除，以及求负、取余等，主要用到的组件有框架、面板、文本框、按钮和菜单栏等。-Basic computing capabilities of the calculator using java programming language, including addition, subtraction, multiplication, division, and seek negative, remainder, the main comp