In 1956, 5MB is needed to be escorted through the plane and is actually big enough to fit a plane. Now, I could hold a 1GB in the palm of my hand. How did we become so high tech that we don’t even need our storage to be the size of a kid’s homemade castle box?
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Memory cards and SSDs are made with microchips, just like CPUs. Making microchips involves printing patterns onto thin slices of silicon metal. Over time, the technology for doing this — it’s called [microlithography](https://en.wikipedia.org/wiki/Microlithography) — has gotten better. We can make much thinner lines and connections, which means that more “stuff” can fit in the same size chip.
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