What's a miller do?
A miller operates a mill. The joke hinges on the idea of a computer as a "mill" for information, a symbol grinder.
Re:NirSoft Freeware (2008)
by kwhitefoot on Wednesday April 18, 2018 @01:42AM
(#16864941)
Babbage called the 'cpu' in the Analytical engine the 'mill'.
( https://en.wikipedia.org/wiki/Mark_S._Miller )