Tocci, J. Ronald, Widmer, S. Neal and Moss, L. Gregory Digital systems :Principles and applications Ronald J. Tocci, Neal S. Widmer and Gregory L. Moss - New York Pearson 2011 - xxiii, 979p.:ill. Pbk ISBN: 9780130387936 LC Class. No.: Tk7868.D5.T6 / 2011