Anyone familiar with these vintage touchscreens?

John Foust jfoust at
Mon Oct 21 11:58:40 CDT 2019

At 11:51 AM 10/21/2019, Tony Duell wrote:
>> Theinfrared array you're thinking of was invented at PLATO, for flat panel (plasma) displays.  They don't work for CRTs because of the convex screen.
>My HP150 will have to disagree with you there.


- John

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