« Last post by evensgrey on November 12, 2018, 10:57:40 PM »
Most nuclear reactors are run via PDP-8s or PDP-11s, which are old '70s DEC minicomputers. I've heard plenty of nuclear engineers say that if they were to open a new nuclear plant, they'd want someone to build new PDP-11s to manage them. They work, they're reliable, they don't network and can't be hacked without being in the same room with them.
Actually, the PDP-11 was still made as late as 1990, with the /93 and /94 models. The line was replaced with the VAX line derived from it because the architecture of the PDP-11 simply didn't allow enough memory space for the kinds of programs people increasingly wanted to run on these types of systems in the late 80's and early 90's.
There was an attempt at building PDP-11's under license in the early 80's, but Foonly only ever delivered one machine. The F-1 was the fastest (at that time, anyway) PDP-11 ever built, but suffered from reliability problems because it was built using wire-wrap (which was considered twitchy back in the early 80's when it was still easy to get people who were actually good at it, being able to order cheap PCBs from China with quick delivery has basically resulted in nobody ever using it any more). Foonly was a company run entirely by engineers, and so nobody was able to force the issue of "We need something we can SHIP, you bastards!" before the money ran out.