system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do memory cards keep getting smaller with more storage space?

50 years ago memory cards were the size of cars and now we fit 1TB into out phones. How does this all work?
gpt
Semiconductors are getting smaller and smaller as technology advanced. 

Decades ago, memory was bulky mechanical devices but as we invented transistors and semiconductors, we were able to shrink the size of these components down from room sized to cabinet sized then down to desk sized and now even smaller.

The difficulty was being able to create on microscopic scales but as we've gotten better at that, we've been able to create things even smaller.

Up and coming tech is creating processing units on the 2 nanometer scale. (a human hair is 80,000-100,000 nanometers wide). This means we can fit a lot more transistors into a smaller space, shrinking the size and/or packing more into the same size as before.