These days, it is not unusual for 10-to 12-year-olds to publish their own websites or for second and third graders    1    （begin）computer classes. At the same time, computer games are becoming increasingly popular as major publishing houses continue to develop    2    （education）computer programs for children in preschool. Also, technological know-how has become a    3    （require）for most jobs in an increasingly digital world, as the computer has become a common tool in most    4    （profession）

The Digital World is a set of volumes    5    aim to describe how digital systems influence society and help readers understand the nature of digital systems and their many interacting parts. Each volume in the set explores    6    wide range of material, explains the basic concepts of major applications of digital systems,     7    discusses the influences they have on everyday life. Because the number of possible topics    8    （be）practically limitless, we focus on a sample of the most interesting and useful applications and tools and explain the basic principles of technology. Readers    9    （encourage）to continue exploring the digital world with the guidance of    10    （we）Further Resources section featured in each volume.