Programmers first learn technology in depth or breadth.

Usually, we call programmers who do industrial applications based on technology platform as application-level programmers, while programmers who engage in technology platform research and development are called R&D-level programmers. They have different emphases, different development methods and different teamwork methods.

Application-level programmers require more breadth of knowledge. After all, in the process of technology application, many technical details need to be considered. Although these technical details are not difficult, the technology involved is quite complicated. Compared with application-level programmers, R&D programmers are more focused on various system-level functions of the platform. System-level functions often require high performance, so programmers need to have a deep understanding of operating systems and algorithms, while the team size of platform R&D is often large, and each programmer only needs to pay attention to one point.