Is there a logo for artificial intelligence at all?

Question

Artificial intelligence

Regardless of any particular implementation or scope. And which is strongly associated with AI, at least for people in the subject, i.e. most famous logo.

Naturally, in the public domain or under a free license.

Answer 1

Does not exist.
Because in scientific pope it is something humanoid, and people in the topic do not need logos.
The images of the Terminator, unfortunately, are all patented, like the character himself.

Answer 2

Choose TYTS

Answer 3

Something like this (only turned to the left, but sometimes without the upper part of the skull: only large gears and the outline of the skull from below):

Answer 4

I think on it, if it is, depicts human features mixed with mechanisms