An ad from the first issue of the Journal of the Society for Informational Display. This machine could receive up to 26 teletype messages of 145 characters each (so longer than pre-2017 tweets), and convert any six of them to alphanumeric characters that could then be sent to “remote television receivers.” So you could put messages on a TV screen. “INFORMATION” as the headline says.
Pretty fancy for the early 1960s. Now we’re all walking around with these in our pockets, there aren’t enough screens to keep up with all the messages we type out. Funny.