Comment: This brings back a lot of memories of fascinating engineering for the period of time back then. AAFM is cited as a source for some of the info in this article.
http://www.righto.com/2024/08/minuteman-guidance-computer.html
Quote:
" I take a close look at the components of the guidance system that was used until the early 2000s.2"
Quote:
Disclaimer: This information is all from published sources. There's nothing secret, and it's mostly obsolete from 60 years ago. I don't have access to a Minuteman system (unlike the Titan), so this post is based on publications and photos, rather than hands-on experience. I've tried to be accurate, but I'm sure there are errors.

The Minuteman III guidance system (NS-20).
Original image from National Air and Space Museum.