ELI5: Explain Like I'm 5

Parallel external memory (Model)

A parallel external memory is like a really big version of a computer's memory. It stores lots of different kinds of information, like pictures and videos, and it's all connected together so the computer can access it quickly. It's like having a bigger memory stick so the computer doesn't have to take so long to load things. Not all computers have this kind of external memory, but some do so they can run bigger programs and keep track of more information.