For service Developers, a much wider amount of content should be available, including service internals such as non-functional requirements, and detailed design.

对于服务开发人员，应当有更广泛的内容，包括服务内部信息，如非功能性需求，详细设计等。

youdao

Including overall system design, data flow and logical framework, divided into various functional modules, system design and function modules, such as specific part of the achievement.

包括系统整体设计，逻辑框架与数据流程，各个功能模块划分，系统功能模块的设计与具体实现等部分。

youdao

Then the design of the RS-422 serial communication module is introduced in detail, including the whole scheme of serial communication module and the design of functional circuit.

并且详细介绍了测试系统中需要自行研发的RS - 422串行通信模块设计，包括串行通信模块总体框图和功能电路设计方案。

youdao