What computer hardware and OS do you think the Army and Navy use in nuclear missile silos and on nuclear submarines?
The land-based ICBM software is old as fuck. They still use 5.25" floppy drives for crying out loud. I mean, it is decades old.
On subs though, I've no idea. Probably some RT/OS or something since the submarines are more recent.
Probably real-time operating systems, custom software, legacy UNIX, probably this too >>52481096 and likely some PDP-11 shit thrown in there like RSX-11 depending on the age of the facility.
I assure you that most of these cold-war era facilities are not using it for anything truly mission-critical.
The USS Zumwalt uses Red Hat Linux on top of IBM servers.
cobol and IBM shit in general was mostly used in the corporate and academic worlds desu senpai
stuff like missle silo control and other industrial applications was a market cornered by companies like DEC and HP
CIC runs on Windows 98
I am a Missile Technician on a SSBN.
the "computer" is an old school 70s era supercomputer with cards the size of motherboards. I'm not joking when I say that The college that we send all our data to, fit the entire room of computer onto a single laptop. Why not upgrade you ask? Well it has a single job and purpose and it does it good, everything is fixable, and the parts have already been bought years ago. Why change what works. Now our laptops that have teaching programs on it so we can learn about the big computer is modern.
Watch the movie Crimson tide, it was fairly accurate 10 years ago.
To a degree. The subs are being modernized to try and push another 20 years out of them. The SSBN class could be described like... Getting a 67 mustang, gutting the interior, and putting in the interior of a 04 mustang...in 2016. If that makes sense.
Now the Virginia classes? Sexy AF. I don't think I can talk about anything on it, but it's crazy modern