Brainiac
来自Big Physics
1970s: from the name of a supremely intelligent alien character in the Superman comic strip, probably from a blend of brain and maniac.
wiktionary
Blend of brain + maniac, with influence from ENIAC, the name of an early computer. The term was coined in the Superman comic book and first appeared in Action Comics #242 in July, 1958.
etymonline
brainiac (n.)
"very smart person," 1982, U.S. slang, from brain (n.) + ending from ENIAC, etc. Brainiac also was the name of a comic book villain in the Superman series and a do-it-yourself computer building kit, both from the late 1950s, and the word may bear traces of either or both of these.
