https://www.youtube.com/watch?v=11_5TB0-lNw
This video shows the teardown of the guidance section of a Javelin missile FGM-148. Nota 2023/12/24: this video is intended to show the technology now obsolete used in the 80s-90s on military devices. Similar technology can be found in avionics for instance. On that guidance section there is nothing sensitive, it is just a complex CPU board with golden parts.