Chicken head
The Commodore Business Machines logo, which strongly resembles a poultry part.
Rendered in ASCII as "C=".
With the arguable exception of the
Amiga, Commodore's computers are notoriously crocky little
bitty boxes (see also
PETSCII).
Thus, this usage may owe something to Philip K. Dick's novel "Do Androids Dream of Electric Sheep?"
(the basis for the movie "Blade Runner"; the novel is now sold under that title), in which a "chickenhead" is a mutant with below-average intelligence.
[
Jargon File]
