Discovered via the #foreverComputer mailing list, a project to restore a 701 #ThinkPad. The battery repair/rebuild is especially interesting, since in my experience that is usually what fails in these old portable devices. (If they are otherwise well built.)
https://www.701c.org/projects/battery
cc: #repair #electronics #theFoundry

Wrote a blog entry with some additional thoughts about the 50 Year Computer (#ForeverComputer):
http://kadin.sdf-us.org/blog/technology/fifty-year-computer.html

tl;dr: I think the technology probably exists to build it today, as long as quantum computing doesn't render all current numerical cryptography obsolete in the next few decades.

But it's a really fun thought experiment, and looking forward to discussing and writing some more about it in time.

I thought that I was original with my #forevercomputer but I missed that the excellent @stevelord from Tales from the Dork Web was already building a 100 year computer!
https://thedorkweb.substack.com/p/the-100-year-computer

Just added it to the further read section of https://ploum.net/the-computer-built-to-last-50-years/

Someone posted my #ForeverComputer on HN. Upvotes welcome.

https://news.ycombinator.com/item?id=26028165