# Overview<a name="EN-US_TOPIC_0000001055367650"></a>

This section describes how to quickly set up a development environment for the basic head unit running on OpenHarmony and how to create, develop, and debug your application. This section uses an air quality application as an example.

## Display Effects<a name="section3997224182313"></a>

The application displays air quality information on three pages:  **home**  page fo overview,  **detail**  page, and  **history**  page. The following figure shows the application on the DevEco Studio simulator.

**Figure  1**  Display effect of the air quality application<a name="fig97934104482"></a>  


![](figures/video_2020-07-25_173141.gif)