Of course, today scientists, engineers and a few million computer hobbyists know the power of computer networking, and they take the convenience of networking for granted. But imagine that the network could transmit not just text video and voice. It is easy to imagine uses for such a system because prototypes are already available. But the prototypes are limited because they link only a few computers.
当然，今天的科学家、工程师和几百万计算机业余爱好音都知道计算机联网的威力，他们认为联网所提供的便利是不言而喻的。但是请想一下，如果网络不仅能传送文字，而且能传送图像和声音，很容易想象这样一个系统的用途，因为现在有很多原型。但是这些原型机有局限性，因为它们只能连接几台计算机。