Comments by "CalBob750" (@calbob750) on "The Transistor: a 1953 documentary, anticipating its coming impact on technology" video.

  1. Up until the transistor the Bell System was able to keep the network alive using electromechanical equipment designed and built in the twenties. The Electronic Switching System 1 of the early seventies was the Great Leap Forward. Historians do a search on Step by Step and Panel Switching systems. Needed three floors of equipment manned by dozens of technicians to keep those museum pieces running to serve twenty to forty thousand subscribers.
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