# SystemUI - [Introduction](#section11660541593) - [Architecture](#section125101832114213) - [Directory Structure](#section161941989596) - [Repositories Involved](#section1371113476307) ## Introduction SystemUI is a system app preinstalled in OpenHarmony. It provides users with interactive UIs that display system-related information, including the system status, prompts, and notifications \(such as the system time and battery level\). ### Architecture ![](figures/en-us_image_0000001103686480.png) ## Directory Structure ``` /applications/standard/systemui ├── figures # Architecture figures ├── entry # Main entry module code │ └── src │ ├── main │ ├── js # JavaScript code │ ├── resources # Resource configuration files │ └── config.json # Global configuration files ├── navigationBar # System navigation module code │ └── src │ ├── main │ ├── js # JavaScript code │ ├── resources # Resource configuration files │ └── config.json # Global configuration files ├── signature # Certificate files ├── LICENSE # License files ``` ## Repositories Involved System apps **applications\_systemui**