Back in EA it was mentioned that computers would play a similar role as radios and TV, and they would be related their own building. Ideas such as The Great Chinese Firewall and online state-controlled news propaganda were floated, but they were never implemented, unfortunately.

Right now, computers only serve as a cash sink and I believe the functionality to relate them to a mod building is missing.

Citizen electronics levels will fall over time, so anything past television basically serves as a buffer.

Unclear what sort of building would make sense given the time period. These wouldn't be modern, internet-connected computers. They'd be more like an Apple II or Commodore 64. I'm not 100% sure what actual communist countries used home computers for, but it was probably more along the lines of "Here's a BASIC interpreter, learn to code" and not "Dial into the propaganda BBS we set up". Just having computers as freestanding devices that boost happiness makes sense.