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[Moved]: LED matrix display for scope

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neazoi

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Back in 90s amateurs made simple scopes using led matrix displays driven by lm3914 and cd4017, like this one

LED Oscope.gif
https://www.electro-tech-online.com/attachments/led-oscope-gif.19395/

https://www.youtube.com/watch?v=_9uBnM5npIQ

These were good to 1MHz or so, even much less most.. I wonder if such a scope can be made faster somehow. Any faster chips or things to try?
 

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