Simplest display for homemade 8080 based computer-what to use?
You should find plenty of ideas with a web image search.



Photo 1. 8080 board with retro seven-segment display and optional 20 x 2 serial LCD display. Source: kswichit.com.

The linked article has full schematics, code, hints on terminal emulation, etc.

It's well worth studying these schematics to figure out how the systems worked in the old days. You then get a better feel for how some of the internals of the integrated micro-controllers work today.