Wire wrapped backplanes
I taught a class at Cray in Chippewa Falls, WI in the mid 80's. It is a small town in northern Wisconsin, also home of Leinenkugel's brewery. I was given a tour of the factory floor and was amazed to see the computers were created using wire wrapping rather than printed circuit boards. These computers were hand built, mostly by women. It was amazing to see the innards of the these machines and the people assembling them. The nickel Leinie's at the nearby bar were also a treat.
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