One which gets mentioned often is NAND 2 Tetris, which starts with basic logic gates and progresses to produce a simple computer: https://www.nand2tetris.org/

One which gets mentioned often is NAND 2 Tetris, which starts with basic logic gates and progresses to produce a simple computer: https://www.nand2tetris.org/ https://www.nand2tetris.org/