[GreenKeys] Ticker-tape first unveiled 1867

[Jim Haynes]

On Sat, 14 Nov 2020, Duncan Brown wrote:

> The original (1867) "tickers" were very simple.  Baudot did not patent his 
> 5-bit code until the 1880s.
>
> Teletype Corp did make 5 & 6-bit stock tape printers, but  not until the 
> 1930s.
>
Yes, the history of printing telegraphy up to Baudot, and continuing for 
some time after, involved type wheels with one pulse for A, two for B, 
three for C...  Baudot invented the efficent binary encoding, but it was 
not until the circa 1930 Teletype ticker that such a code was used for 
stock ticking.  And after that the old tickers continued to be used for 
stuff like baseball scores.

The final Teletype ticker used the aggregate motion principle that was
used in the Model 37 page printer.