# 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 monitoring application \(AirQuality\) as an example.

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

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

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


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