On Wednesday, 28 November 2012 15:39:43 UTC, Oscilloclock wrote:

> Not that I'm biased (!), but if you are able to roll your own, you can 
> see two nice designs employing circle graphics at Grahame's 
> site<http://www.sgitheach.org.uk/scope2.html> and 
> at Oscilloclock.com . These are based on David's original design at 
> cathodecorner.com .
>  
> There are many other raster graphics based designs, which have kits 
> available. Dutchtronix <http://www.dutchtronix.com/ScopeClock.htm> must 
> surely be the most common, but a google will show more.
>  
> Aaron
>
> No disrespect to David, but the original idea comes from old examples of 
character generation for RADAR & ATC (air traffic control) screens etc. 
when everything was analogue.

<https://lh6.googleusercontent.com/-F5dLVuJRvYg/ULZljAfjb5I/AAAAAAAAAow/W4AIoC2ynNo/s1600/2009716214148489.gif>
R. L. White, Forming Handwritten. Like Digits on CRI Display, 
Electronics,32:11, p 138-140 

Nick

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