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If you would like to start at a slightly lower level, Charles Petzold has written a great book on the subject:

https://www.amazon.com/Code-Language-Computer-Hardware-Softw...

Using everyday objects and familiar language systems such as Braille and Morse code, author Charles Petzold weaves an illuminating narrative for anyone who’s ever wondered about the secret inner life of computers and other smart machines.

... cleverly illustrated and eminently comprehensible story ... No matter what your level of technical savvy, CODE will charm you—and perhaps even awaken the technophile within.

Code doesn’t sound “slightly lower level”.

I think you and the GP are using "lower level" in different ways. GP means with a lower barrier to entry, you mean "closer to the electrons" if I understand both of you correctly.

Code goes into how logic gates like the nand gate are built, so it does start at a lower level than Nand to Tetris which start with nand gates as primitives.

Thank you. Going to see if I can get it from my local library.

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