1.引言20世纪90年代以来,许多关于企业、产业和宏观层面具体问题的研究都开始注意到信息和通讯技术对增长率的重要作用,很多学者还通过案例研究了其具体的作用机制。在美国,人们普遍赞同:90年代的大发展就是缘于信息通讯技术产品生产的繁荣。虽然也有一些学者 1. Introduction Since the 1990s, many studies on specific issues at the enterprise, industry and macro level have begun to pay attention to the important role of ICT in the growth rate. Many scholars have also studied the specific mechanism of action through case studies. In the United States, it is generally agreed that the great development of the 1990s was due to the prosperity of the production of ICT products. Although there are some scholars