Ask HN: Recommendations for Computer-Science Fiction?

In this recent post (https://news.ycombinator.com/item?id=9447097), the author talks about CS works that seem so advanced as to be science fiction. The following quote comes up:

> This term stands in contrast to Computer-Science Fiction, which is indeed fiction about computer science.

Any recommendations for Computer-Science Fiction, that is, interesting, well-written fiction about CS? I'd love to read good fiction that tackles hard CS in an informed way.