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Phone jacks. Invented in the late 19th century. Still in use today.
by paradox460 1y ago
Phone jacks. Invented in the late 19th century. Still in use today.
- zettabomb 1y agoI assume you're referring to the 1/4" jacks, not RJ series?
- EvanAnderson 1y agoI assume you're talking about these, right? https://en.wikipedia.org/wiki/Phone_connector_(audio) https://en.wikipedia.org/wiki/Phone_connector_(audio)