BRAIN BOLT on Instagram: "Before silicon chips took over the world, computers literally remembered things using tiny magnetic rings. This 4096-bit magnetic core memory from the 1950s was cutting-edge technology and powerful enough to be used by NASA in early space and research programs. Each bit of data was stored in a microscopic ferrite core, threaded by wires and magnetized in one of two directions to represent a 0 or a 1. No electricity meant no memory loss, so even if power failed, the data