A lot vs. Alot: 9 Grammatical Pitfalls
"a projecting part of a rotating machinery," 1777, from Dutch cam "cog of a wheel," originally "comb;" cognate of English comb (n.). This might have combined with English camber "having a slight arch;" or the whole thing could be from camber.
abbreviation of camera, by 1990.
1. content addressable memory. 2. computer aided manufacturing.