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I saw the idea in Bitmap Logic Simulator and a bit simplified.
https://otus-lisp.github.io/logic-wire/
https://www.instructables.com/How-to-Build-an-8-Bit-Computer/
https://realhet.wordpress.com/2015/09/02/bitmap-logic-simulator/
https://www.dafont.com/i-pixel-u.font