# dde-calendar #### Description dde calendar:Calculator is a powerful desktop calculator that supports standard mode, Scientific mode and Programmer mode. Perfect support for keyboard input, in the keyboard input also support symbol fault tolerance and calculation result linkage. #### Software Architecture Software architecture description #### Installation 1. dnf install dde-calendar #### Instructions 1. Select **standard ** to switch to the standard mode screen and perform basic addition, subtraction, multiplication and division operations. 2. Select **science **, switch to the Science mode interface, and perform advanced operations such as functions, exponentials, and roots. 3. Select **programmer **, switch to programmer mode interface, perform binary, octal, decimal, hexadecimal and other complex operations. #### Contribution 1. Fork the repository 2. Create Feat_xxx branch 3. Commit your code 4. Create Pull Request #### Gitee Feature 1. You can use Readme\_XXX.md to support different languages, such as Readme\_en.md, Readme\_zh.md 2. Gitee blog [blog.gitee.com](https://blog.gitee.com) 3. Explore open source project [https://gitee.com/explore](https://gitee.com/explore) 4. The most valuable open source project [GVP](https://gitee.com/gvp) 5. The manual of Gitee [https://gitee.com/help](https://gitee.com/help) 6. The most popular members [https://gitee.com/gitee-stars/](https://gitee.com/gitee-stars/)