iii Copyright Goodheart-Willcox Co., Inc. Introduction As you prepare for college and career, you will likely fi nd that information technology (IT) is unavoidable. Workplace correspondence, payroll, banking, and countless other activities associated with everyday life are all done primarily on a mobile device or in front of a personal computer. In Principles of Information Technology, you will learn basic principles and concepts about information technology to help you become a more valuable employee, a better citizen, and a knowledgeable consumer. This text is laid out in a logical, conceptual progression. You begin by learning about the basic ins and outs of information technology, progress to applications that will likely be used in the workplace, and fi nish by learning about the interconnectivity that runs in daily life. Each chapter is laid out in a manner that is easy to read, easy to follow, and easy to understand. Figures, photos, and illustrations help provide clarity, understanding, and comprehension. Hands-on activities featured in the chapters allow you to practice the topics discussed in an easy and intuitive manner. Certifi cation Whether you are new to IT or experienced, Principles of Information Technology affords an opportunity to build and refi ne your knowledge and skills in the IT world. This text will help you prepare for college and career. It will also help you prepare for and pass Certiport IC3 Digital Literacy Certifi cation. The three areas of IC3 certifi cation are Computing Fundamentals, Key Applications, and Living Online. For more information on IC3 certifi cation, please visit Certiport at www.certiport.com.