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A comment on Learn Electronics by Practice. Parent comment

Re:Learn Electronics by Practice by patmorgan23 on Saturday July 08, 2023 @06:34PM (#36649448)
Analog, Radio and television were both developed before digital electronics was.
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Re:Learn Electronics by Practice by Animats on Sunday July 09, 2023 @03:46AM (#36652508)
Digital systems, using relays, predate analog electronics.

There were relays used for railroad signaling in the 19th century. Union Switch and Signal was formed in 1881. The first active electronic device, the deForest Audion, was developed in 1906.

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