Internet 即国际互联网络,它最早是在1969年建立起来的。当时美国国防部将各种不同的网络互联在一起,建立了一个覆盖全国的计算机网络,其目的是连接许多大学和公司,为各地计算机系统提供信息和多途径的访问。几年后,其它网络纷纷加入,连通了越来越多的计算机系统。到目前为止,有近200个国家连入了 Internet。Internet 网络电话线、微波、激光、光纤电缆和卫星等多种通信手段,将各种不同的系统,如 Unix, Internet is the Internet, which was first established in 1969. At that time, the U.S. Department of Defense interconnected various networks and established a nationwide computer network. The purpose was to connect many universities and companies to provide information and multi-path access to computer systems in various places. A few years later, other networks joined in to connect more and more computer systems. So far, nearly 200 countries have joined the Internet. Internet telephone lines, microwaves, lasers, fiber optic cables and satellites and other means of communication, a variety of different systems, such as Unix,