Class one droid

Class one droids, also known as first class droids or first-degree droids, were droids skilled in physical, mathematical, and medical sciences, such as medical droids. Q2-B3KO, initially a mere fifth-degree articulated holographic color separator, had her droid brain upgraded to first-degree status.

Text and facts from the “Class one droid” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.