Happy Birthday RAM

The structure consisted of a plane made of wires and magnetic rings called cores. Each ring contained one bit of data. Every bit on the memory plane could be accessed with a single read-and-write cycle.In short, magnetic core memory was the first random access memory that was practical, reliable and relatively high-speed. The time it took to request and retrieve information from memory was a microsecond -- hundreds of thousands of times slower than memory today, but nonetheless a magnificent achievement in the 1950s.

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