The book belongs to the subject area of Engineering and Computer Science. The manufacturers of commercially off the shelves (COTS) microprocessors do not share the safety related information on using their products for time-critical sensitivity applications. The complexity of modern microprocessor evaluation in general and for time-critical applications in particular has been a well known challenge for both researchers and practicing engineers. This book's purpose is to bridge this gap and provide some safety assurances in using COTS embedded processors. The book combines the existing results and ongoing research results for both the researchers and practicing engineers in industry.