OT: Vintage Computers - Core Memory

[Blacklord]

Cores are rings of ferrite suspended in a grid of wires (visible in the right third of this frame). A charge to a point on the grid magnetizes the ring in a clockwise or counter-clockwise direction, which corresponds to a one or a zero: one bit. Because it holds its state, core memory is able to retain information even when the electricity is turned off, thereby paving the way to modern computing.

[airship]

These were hand-woven, by the way. Can you imagine weaving each bit of your computer memory by hand?