3 ms·
Bell System historical video on this.[1] This is the popular version, but it's not bad. The more technical version [2]. [1] https://www.youtube.com/watch?v=SS5
by Animats 5mo ago
Bell System historical video on this.[1] This is the popular version, but it's not bad. The more technical version [2].
[1] https://www.youtube.com/watch?v=SS5X5BkIKpM https://www.youtube.com/watch?v=SS5X5BkIKpM
[2] https://www.youtube.com/watch?v=ai8BqomKTKE https://www.youtube.com/watch?v=ai8BqomKTKE