(Turn on closed captions. Ed is a little hard to hear over the switchroom noise.)
Museum volunteer Ed Mattson continues his tour of the crossbar systems. Featured here is the No. 1 Crossbar, installed in Seattle's LAkeview office in 1942.
Part 1 here: • No 5 Crossbar Tour
Негізгі бет Ғылым және технология Crossbar Tour Part 2 - Signaling [CC]
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