Anyone familiar with these vintage touchscreens?

Nigel Johnson nw.johnson at
Sun Oct 20 11:14:53 CDT 2019

It was called teletext despite the implications, at least here in 
Canada.  People just couldn't get their tongue around NAPLPS!

It looks just like the teletext systems I worked on, maybe ours was 
better than yours?



On 20/10/2019 06:43, Peter Corlett via cctalk wrote:
> On Sat, Oct 19, 2019 at 02:23:46PM -0400, Nigel Johnson via cctalk wrote:
>> Judging by the year, it was probably a teletext terminal. [...]
> It's not Teletext, unless that word means something different on the other side
> of the Pond. Teletext was basically a text system (the hint's in the name) with
> graphics (and indeed colour) being a weird hack that gave it a particular
> appearance, especially in typical implementations which used the SAA5050
> character generator chip.
> The palette and colour fringing suggest Apple II to me.

Nigel Johnson

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