ELI5: Explain Like I'm 5

Microcode

Microcode is like a type of very simple computer language that helps an computer understand instructions. It helps the computer do stuff like find and understand the instructions for doing calculations, printing documents, and controlling game characters. Microcode is very complicated, so humans don't understand it directly - instead, we use other computer languages like Java and Python to tell the computer what to do. Microcode is like a filter that helps a computer understand instructions that come from other programs.