FERRITE
$FERRBefore the cloud, computer memory was something you could hold: tiny rings of ferrite, threaded by hand. Built on the metal.
CORE MEMORY GENERATOR
Store your name in ferrite.
Every letter becomes 8 bits. Every bit becomes a ring, magnetised one way (1) or the other (0), exactly how core memory stored data in 1953.
Download the image, then attach it to your post.
What is ferrite?
1953MIT's Whirlwind computer gets the first magnetic-core memory, built from ferrite rings.
1 ring = 1 bitEach ring was magnetised one way or the other: a 0 or a 1, threaded on crossing wires.
No powerCore memory kept its data with the power off. Pull the plug, and the bits stayed put.
ApolloThe computer that guided Apollo to the Moon ran on core memory.