# 系统特性与基础功能

* **[通用规格](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/general-specifications)**   
* **[应用规格](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/app-specifications)**   
* **[元服务规格](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/atomic-specifications)**   
* **[卡片规格](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/widget-specifications)**   
* **[自由流转规格](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/distributed-capability-specification)**   
* **[音频规格](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/audio-specification)**   
* **[显示规格](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/display-specification)**   
* **[协议规格](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/protocol-specification)**