Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An excellent book

Anyone who have learnt embedded microcomputer systems by datasheets knows that it is not an easy task. There are many important details in many different sources. Dr. Valvano's book contains the most important concepts and lots of examples. The book is mainly suitable for anyone who wants to learn the 68xx family. The simulation software is good and very easy to use. The specific objectives of the book include: 1) advanced architeture; 2) interfacing external devices to computer; 3) advanced programming and 4) embedded applications.