Unusual software carriers. (Was :Vinyl Data- Classic Computers )

[Pete Edwards]

2008/10/7 Pete Turnbull <pete at dunnington.plus.com>

> On 07/10/2008 22:36, John Foust wrote:
>
>  In the early 80s, I think there were some very low-speed data stream
>> systems
>> via teletext ( http://en.wikipedia.org/wiki/Teletext ) that could send
>> the stream out RS-232.  Is my memory correct?
>>
>
> I don't know of any exactly like that, but here in the UK, the BBC provided
> some "telesoftware" on high-numbered teletext pages, encoded using the CET
> (Council for Educational Technology) standard, the same as for Prestel (see
> wikipedia).  There were


Does anyone else remember 'Tomorrow's World' in the UK transmitting software
via a flashing square in the bottom right of the TV picture? There was some
kind of photocell dongle that attached to the computer. Memory is vague -
did it plug into the tape input? I can't remember what the target system
was, possible several via the basic translater mentioned earlier in the
thread? No idea what the data rate was.

-- 
Pete Edwards
"Prediction is very difficult, especially if it's about the future" - Niels
Bohr