EXE+代码，没有加组件代码（可以在盒子里下载）。

盗版计算器软件过期了，无奈自己做了一个，核心控件用Expression_Parser_v34，自己就写了界面。

该组件的精度有限，不能大数高精计算，盼望牛人提供高精计算组件。-EXE+ Code, there is no increase in component code (can be downloaded in boxes). Calculator software piracy expired, but own a core control with Expression_Parser_v34, wrote their own interface. The component s accuracy is limited, not high-precision calculation of large numbers, I hope the cattle to provide high-precision calculation component.