...a comprehensive source on interfacing the real world to microprocessors should prove invaluable to embedded systems engineers, students, technicians, and hobbyists. Anyone involved in connecting the analog environment to their digital machines, or troubleshooting such connections will find this book especially useful. - Embedded Technology
In general, for all the sections, there are plenty of simple diagrams and also the maths is kept to a simple level.
...I like this book and recommend it as an introduction to the subject for home use, students and SW Engineers. - Chris Hills in the ACCU magazine CVu