Tkgate, http://www.tkgate.org
Albert Paul Malvino, Jerard A. Brown, Digital Computer Electronics, Glencoe/Mcgraw-Hill http://www.amazon.it/Digital-Computer-Electronics-Albert-Malvino/dp/0028005945
Olivier Carton, Circuits et architecture des ordinateurs, http://www.liafa.jussieu.fr/~carton/Enseignement/Architecture/archi.pdf