２０世纪中期以来，以微机革命、网络革命和通信革命为主流的信息革命，把工业经济时代推向一个崭新的时代——知识经济时代。在这一时代，电子计算机是其特有的劳动资料，光纤通信与通信卫星成了主要通信手段，整个世界变得更加开放，人类社会的政治、经济、文化乃至思想观念? Since the middle of the 20th century, the information revolution dominated by microcomputer revolution, cyber revolution and communications revolution has pushed the era of industrial economy to a brand-new era - the era of knowledge-based economy. In this era, the electronic computer is its unique labor force. The optical communications and communications satellites have become the main means of communication. The entire world has become more open and the political, economic, cultural and ideological concepts of human society have become more open.