Pedagogic video-series about digital logic by Jack Buffington (youtube.com)

Jack Buffington have recently started this very pedagogic video-series that covers the mathematics and logic behind electronics.

He starts out easy by introducing binary, decimal and hexadecimal system. He then explain how to add and subtract in binary form, then multiplication, division etc.

Each episode covers one new element in digital logic, and he's merging the episodes together by using some methods learned in previous episode.

It's quite easy to follow along, and fun to learn some of the mathematical theory behind digital logic.