Gerry Blaauw and Fred Brooks are two of the most prominent names in computer architecture. In this remarkable book, long-known in the field and widely used in manuscript form, they provide a definitive design guide and reference for practicing computer architects. Blaauw and Brooks first elaborate a conceptual framework for understanding computer architecture. They then describe not only what present architectural practice is, but how it came to be so. They examine both innovations that survived and became part of the standard computer, as well as the many ideas that were tried and discarded. The authors' goals are to introduce architects to unfamiliar design alternatives, and to analyze and systematize familiar ones. The designer's most important study, they argue, is other people's designs, and this book is a unique resource for information about them. Armed with the factors pro and con on the various known solutions to design problems, computer architects will be able themselves to determine the most fruitful course for their own technology or application.