进入90年代以来,社会的信息化进程正在加快,从全球范围来看,信息时代正在来临,认清这一点非常重要。信息高速公路的目标是任何人在任何时间、任何地点都能使用多种媒体(如语言、文字、图象、动画等)来传递、交流和使用信息,它将打破空间的束缚,把全球范围的社会群体联系在整个计算机网络上。这个宏伟目标虽然还需要二、三十年甚 Since the 1990s, the process of informationization in the society is accelerating. From a global perspective, the information age is approaching. It is very important to recognize this point. The goal of the information superhighway is that anyone can use any number of media (languages, texts, images, animations, etc.) to transmit, communicate and use information anytime, anywhere. It will break the bounds of space, The social community is connected to the entire computer network. Although this grand goal still takes two or three decades