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During the '80's, my elementary school had 2 or 3 23" RCA tube color TV's with the jack panel on the rear of the set (CTC39 "mural TV"), sitting on a roll around metal cart and connected to a Sony U-matic tape machine. Later, they got a standard VCR to go along with the U-matic machine. The only newer TV was a 25" Zenith "custom series" that was in the library. If a teacher wanted the TV, he/she had to check it out in advance.
In late '89-early '90, the schools got channel one; so, most every classroom got a 19" Magnavox wall mounted TV and there was a CCTV system in the library. So, that pretty much did away with the roll around TV's. For some reason, my 10th grade biology class didn't get a TV mounted in the room; so, it still had one of those RCA tube sets in there that was just barely making it by the early-to-mid '90's.
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