This new edition of [the book] brings you a completely revised textbook.... The result is an innovative instructional system designed to help you teach and to help your students learn about computer technology.... Since our primary goal is to present students with technology that they are likely to encounter at school and on the job, personal computers (PCs) are used in examples throughout. Other platforms (e. g. , Mac, OS/2) and sizes of computers (e. g. mainframes) are discussed in the context of how they are used today.... Every computer concept is presented with guidelines on how to use the technology to be more productive at school, at work, and at home. -Pref.