Exercises and notes on the Coursera's Build a Modern Computer from First Principles also known as From Nand to Tetris by the Hebrew University of Jerusalem and the book The Elements of Computing Systems.
The set of tools need for the project (including its source code) can be download from the official site and are open sourced under the GNU GPL license.
My implementations of the projects from the course.
Some random notes I took while watching the lectures and building the projects.