alt Hacker NewsBattlestar Galactica (2004) has an aesthetic like that. While they do use mainframe computers, they avoid all networking due to the risk of being hacked. Galactica is the only Battlestar to survive the first episode specifically because it’s the only one that still uses this outdated technology.
Plus, it’s just one of the best TV shows ever made in any genre.
One of my earliest serious fan sites I made. I forgot the name, might be able to pull it up on archive, but I had a section with the whole cast each with a "cylon suspicion meter" bar. Great memories.