Hello. Angstrom demo?

I’m beginner.
um… I’m sorry because of easy question.
What is the angstrom demo?
Is there perfect angstrom kernel…?
I am confused…

Angstrom is the operating system that ships with board. It is based on a version of Linux.

I am not sure what board you are asking about, so I just picked the BeagleBone Black to base my response on.