From EnGadget; (http://www.engadget.com/2015/06/14/amiga-controls-school-district-hvac/)
QuoteThink the Windows XP workstation you use at the office is ancient? It doesn't hold a candle next to what the Grand Rapids Public School district is using to control its climate systems. All 19 schools covered by the authority depend on a nearly 30-year-old Commodore Amiga 2000 to automate their air conditioning and heating. It communicates to the other schools using a pokey 1,200 baud modem and a wireless radio so behind the times that it occasionally interferes with maintenance workers' walkie talkies. Oh, and a high school student wrote the necessary code -- if something goes wrong, the district has to contact the now middle-aged programmer and hope that he can fix it. It's a testament to the dependability of the Amiga in question, but you probably wouldn't want to trust the well-being of thousands of students to a computer that's probably older than some of the teachers.
There's a good reason why the school district has been hanging on to this vintage solution for so long. Replacing it with a modern system could cost up to $2 million dollars, which isn't exactly chump change when an HVAC controller upgrade is usually low on the priority list. There may be relief in sight, however. If the electorate passes a $175 million bond proposal, the district will have the cash it needs to replace its Amiga with a computing platform that was built sometime this century.
Here's a video (http://up.anv.bz/latest/anvload.html?key=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) a local TV channel posted on it;
My last job they had some pretty old computer equipment they were still using. Like the district when parts were needed it was often to the eBays to find parts.
I love this... Its interesting our ICBM systems are running on ancient computers. However they are 100% self contained and 100% hacker proof. So they can't figure out how to replace them.