Glossary
Embedded engineering has its own vocabulary, and a lot of it is acronyms that mean something quite specific in this field even when the letters look familiar from elsewhere. The problem isn't that the terms are hard — it's that skimming past one you half-recognize (assuming "MPU" means the same thing every time, or that "RTOS" is just "a small OS") is exactly how a plausible-but-wrong mental model gets built, and those are expensive to unlearn once you've written code around them. This page defines the terms every later folder in this section assumes you already know, once, in one place, so you can look one up instead of re-deriving it from context. Where a term's proper home is a folder that doesn't exist in this build yet, it's still defined here — it just isn't linked anywhere yet.