Imagine tiny, donut-shaped magnets. These are called cores. In core memory, there are lots of these little magnets. They're placed on a grid of wires that crisscross each other.

When electricity flows through both a horizontal and a vertical wire, it makes a core magnetized or not. Computers understand this as either a 0 or a 1.

Here's something cool: even when the computer is turned off, core memory keeps its information. It's like magic! And because there are no moving parts, core memory works faster than other types of memory like drum memory.

So, core memory is like a bunch of tiny magnets that help computers remember things quickly and even when they're turned off.