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Negative displays

I don't remember when I noticed this.   But negative displays always seemed easier to read and see.

http://forums.watchuseek.com/f43/how-convert-plain-dw-5600-negative-display-129102.html

http://hackaday.com/2014/04/24/simple-hack-creates-an-inverted-watch-display/

https://news.ycombinator.com/item?id=7622482

http://www.instructables.com/id/Privacy-monitor-made-from-an-old-LCD-Monitor/?ALLSTEPS


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