Both are bits of kit we still use at work, without fail they are our most reliable bits of 'tech' we use, can remember a couple of days in ten years when they haven't work. No other system we use has that low a fail rate.
But yeah Thee is a cave dweller...
Lol, I use MSDOS every single day. The largest MSDOS program ever created actually.
It’s amazing how much old tech is still in active use in places we least expect.