Anyone familiar with these vintage touchscreens?
nw.johnson at ieee.org
Sat Oct 19 13:46:07 CDT 2019
Are you sure it wasn't the massive over-funding by government that
On 19/10/2019 14:35, ben via cctalk wrote:
> On 10/19/2019 12:23 PM, Nigel Johnson via cctalk wrote:
>> Judging by the year, it was probably a teletext terminal. There were
>> various field trials of such systems around that era. We had one in
>> Toronto's Eaton Centre - it was based on NAPLPS, and used a PDP11/23.
>> There was a lot of Canadian Government money put into research to
>> promote he Canadian vector-based protocol, claimed to be more
>> efficient than the European alpha-mosaic ones. Ours ran at
>> 1200/150(?) baud.
>> Research was done at a Bell Canada site on Carlingview Avenue in
>> Ottawa under some sort of sub-contract. They used Able DMAXes on an
>> 11/70 which had a pot to adjust the 150 baud clock. They actually
>> flew me up from Toronto, with a scope, to adjust that pot, since
>> everybody there was hands-off this external stuff.
>> It may have had a future if HTTP and the internet were not just
>> around the corner:-)
> Well I think Hook up up to your TV and slower than hell cheap decoders
> killed the NAPLPS rather than the internet is comming.
Amateur Radio, the origin of the open-source concept!
You can reach me by voice on Skype: TILBURY2591
If time travel ever will be possible, it already is. Ask me again yesterday
This e-mail is not and cannot, by its nature, be confidential. En route from me to you, it will pass across the public Internet, easily readable by any number of system administrators along the way.
Nigel Johnson <nw.johnson at ieee.org>
Please consider the environment when deciding if you really need to print this message
More information about the cctech