Quote:
Originally Posted by cassidym
They would take a frame (about the size of a playing card) and thread a needle with wire and run it through the frame and a small iron core in the middle. Then they'd run another wire through and finally a third.
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That's core memory, named for the tiny ferrite (donut-shaped) cores. When I was in the Air Force, the F-106 fighters that I worked on had core memory and a large magnetic drum as part of the flight computer. The flight computer was probably the most modern part of the aircraft. The circuit boards were chock full of TTL chips. The first F-106 rolled off the assembly line in 1957. BTW, if you lookup F-106 on Wikipedia, some of that information is wrong.
I actually have a large card of core memory that a friend gave me many years ago. I had it mounted in a silver frame, with a reflective backing behind the core memory. Most people just think it is a piece of modern art.