当今世界,各种通讯网络已经遍布全球,使用和维持这些网络,都要离不开高科技:互联网需要电脑和光缆,无线网络需借助人造卫星,甚至连有线电话网,也离不开程控交换机。如果回顾一下历史上最早的通讯网络是什么样子的,或许是件有趣的事情。我们将为它的简陋而惊讶,更要为当时的人们就地取材,因陋就简的大胆想 In today’s world, all kinds of communication networks have spread all over the world. The use and maintenance of these networks are inseparable from the high-tech: the Internet requires computers and fiber-optic cables; the wireless network needs satellites and even wired telephone networks; . If you look back to what the earliest history of communication network looks like, perhaps something interesting. We will be surprised by its simplicity, but also for the local people at the time, because of simple bold thought