Back to course overview:How Computers Work

Lesson 2 of 37 · Before Electronics

Electronic Computing

CrashCourse11mVideo

Relays, then vacuum tubes, then transistors. Three technologies doing exactly the same job faster, which is most of what the history of computing turns out to be.

Video not playing? Some channels disable embedding, and there is no way around it.Open on YouTubeinstead — then come back and mark it complete.