"This book is, on one level, a discussion of how computers work with numbers. It tells how computers represent numbers such as integers, floating point numbers, big integers, decimals, and what is more, how one can write one's own routines to operate on numbers. . If thismakes you wonder about the utility of computers and how to better understand numerical representations and calculations, you will do well to add this book to your winter reading list." (David S. Mazel, MAA Reviews, maa.org, January, 2016)

"The book starts with an overview on number systems. . The book is a good source of information for all who wants to learn how numbers are represented in computers and how computations are performed." (Michael Jung, zbMATH 1330.65002, 2016)