[GreenKeys] Wheatstone Tape Perforator - Kleinschmidt, Creed, Tele type, Boehme

[Jim Haynes]

Also, I don't know where it was used, but RCA Communications had their
ARQ system that used the Moore code, a 4 out of 7 error detecting
code that would automatically ask for a retransmit if it received a
character in error.  Much like the more recent AMTOR, but I don't
know quite how much like.

I once saw a photo of a keyboard perforator of the GPE family but
clearly made for something like 4 our of 7 code.  (Or maybe it was
3 out of 7, but in any case an error detecting cdode.)

 	---

 	"Ya can argue all ya wanna, but it's dif'rent than it was."
 	"No it ain't! No it ain't!  But ya gotta know the territory."
 		Meredith Willson, The Music Man