Produced by the GPO Film Unit. Models are used to demonstrate the working of a teleprinter. Shown is how the pressing of a key on the keyboard generates a .
Here are a selection of BT and GPO historical films, videos and adverts from the BT Archives. Provided courtesy of BT Heritage & Archives. Not to be used .
Here are a selection of BT and GPO historical films, videos and adverts from the BT Archives. Provided courtesy of BT Heritage & Archives. Not to be used .
Category
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TV