Introduction

Welcome to Upgrading and Repairing PCs, 20th edition. Since debuting as the first book of its kind on the market in 1988, no other book on PC hardware has matched the depth and quality of the information found in this tome. This edition continues Upgrading and Repairing PCs’ role as not only the best-selling book of its type, but also the most comprehensive and complete PC hardware reference available. This book examines PCs in depth, outlines the differences among them, and presents options for configuring each system.

The 20^th edition of Upgrading and Repairing PCs provides you with the in-depth knowledge you need to work with the most recent systems and components as well as providing you with an unexcelled resource for understanding older systems. We have worked to make this book keep pace with the rapid changes in the PC industry so that it continues to be the most accurate, complete, and in-depth book of its kind on the market today.