Digital Design Part 007 Boolean Algebra NAND, NOR, XOR, NXOR, TRI STATE

This course is offer on Coursera at: https://class.coursera.org/digitalsystems-001 as Digital Systems - Sistemas Digitales: De las puertas lógicas al procesador by Elena Valderrama, Jean-Pierre Deschamps, Lluis Terés ... https://www.youtube.com/watch?v=Q3j-iLSlJP0