| Information technologies has become the core and main support in this knowledge economics era, they are the strongest engine of civil economics development, and are changing the way of economics activities, work and life, the informatization which result from information technologies is one of the most influenced revolution up to now. However, we should see that digital divide which result from imbalanced development of information and communication has gradually emerged and became appeal people's eyes. Like disparity in economics, digital divide became larger than before rather than smaller. It has become a important issue which can't be ignored. "Digital divide" is always means "disparity between information-rich and information-poor". It is not only lies between developed countries and developing countries, what's more, it also lies among different areas, cities and rural areas. In the period of new economy which depend mostly on information technology became the main stream of the world, the disparity not only block us from chasing developed countries, but also makes our economic gap which lies between developed area and undeveloped area larger than before, which is more complex than single economic disparity. In china, digital divide is a broad issue covers many aspects, seriously influence many aspect of development, resolving digital divide will drive better development of Chinese society. Therefore, researchers have attached much importance on it and raise series resolving measurement. But most research is relatively primary, the condition of digital divide lack of systematic classify and particular space acquaintance, this paper is on the base of a great deal of data, according to "S" curve theory for innovate diffusion, then detailed account for the definition of digital divide, particular appearance of digital divide in China, disparity from developed countries and average levels of world, digital divide in different areas in China and digital differences between city and country. In this way particular reasons for China's digital gap was founded, and finally refer to many good experiences and cases from aboard or China, put forward the way to reduce our regional digital divide. The paper is divided into 7 chapters, the detailed content of each chapter is as follows: Chapters 1, preface. This chapter gives a simple definition of digital divide, particular representation of China's digital divide, then give a brief introduction of the main content of this paper. Chapter 2, summarize of digital divide. The chapter includes introduction of digital divide's background, detailed definition of digital divide, and world representation of digital divide. Detailed introduced the process of attracting people's eyes since it was formerly raised in 1995, the definition of digital gap is mainly definite special meaning of digital divide, this paper restricts the research object to disparity of different level of China's regional digitalization and information resources usage. The last part of this chapter introduces internet's rapid speed development, and special appearance of digital divide between developed countries and developing countries, then explains even in developed countries like America digital divide is also existed. Chapter 3, particular appearances of digital divide in the course of informatization construction of China. Four aspects were illuminated in the chapter, first introduces "S" curve theory of internet development and China's phrase of internet development on the "S" curve, the followed 3 parts of the chapter introduce digital divide appearance between China and developed countries, digital divide of different restricts of China, and digital divide between city and country. In which detailed data and diagram and spatial map was showed to illuminate the issues. Chapter 4, discusses the cause of digital divide in China. Based on above explanation and correlate analysis the reason that economic difference is the main cause of digital divide is reached, second cause is...
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