From the reviews of the second edition:
“The book under review ... provides a succint (about 250 pages) reference book to computing topics (ranging from history to people to basic concepts). ... In its succint presentation the book has several strengths: It deals with pioneers (like Zuse) and historical issues ... . The book aims at the general reader or student with some general mathematical background knowledge and some experience with computers who needs a short offline encyclopedia.” (Manuel Bremer, Zentralblatt MATH, Vol. 1244, 2012)