The Great Search: Miniature Ferrite Core Ring (Toroid)
We were flipping through a cool old book on how computers were made and there was a section on 'core memory'. This is how data was stored dynamically on computers before capacitive-based RAM. Instead of storing a charge on a transistor's gate, the flip of a ferromagnetic core in a grid could store a single bit. Some folks make core memory for fun now - you just need some enameled wire and miniature ferrite cores! While the ultra-tiny rings of yore are no longer made, you can still get some pretty small toroids. Let's see what's available at Digi-Key! Computers: Their History and how They Work…
The skinny
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