This is a superbly written book. The author has real gift for creating clear, consise, and complete explanations. Some of the topics that I particularly was impressed by are 1) the explanation of synchronization when crossing clock domains 2) the how and why of the I2C and SPI serial interfaces 3) use of decoupling capacitors in noisy systems. There were many more. The section called "Electrical Fundamentals" is good, valuable information. The remarkable thing about the book is the way all the topics in the book are presented in the context of practical digital design... the common thread throughout the book is "how does this relate to a digital system. The font is small, but I view this as getting my money's worth :-). Overall, this is a very, very good book.