Well, you might say that he's familiar with civilian operating systems, since I don't know if there's a specific OS that the civilian population uses. Otherwise, the main issue is with him interacting with the heating units as a part of his childhood (they didn't exist until YE-30/40), and with him living in a cold area. From what I remember, just about everyone in Cavalon lives in the city, or the surrounding area.
You might be able to write it that he lived in a small town in one of the attempted but failed biospheres (
as detailed here) which happened to be cold and that some people refused to move out of.