八年级信息技术上册第一单元走进网络第3课《接入因特网》课件2浙教版.ppt

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课前讨论,提问:大家知道我们经常在上的网,是什么网吗?,那么Internet是什么呢?,所以说Internet是由成千上万的用户和计算机组成的跨越全球的互联网络,是一个世界范围的信息资源的集合体。,生:互联网或国际互联网 师:简称Internet。,已知这是一台新买的可以正常使用的电脑,要实现上网,你觉得可以怎么做?,有线上网,无线上网,按上网方式的不同,可以将计算机网络分成:,以拨号方式实现的连接,家庭上网方式,电脑房中的计算机网络,任务2:网络布局设计,说明:请根据具体的要求,从网络硬件池中选择设备,完成网络布局的设计。,课堂小结,计算机要实现接入因特网,不仅需要一定的硬件设备,还需要一定的软件支持。电脑中必须安装好操作系统,同时还必须有正确的网络协议。网络协议是计算机网络中各种设备之间通信规则的集合,是接入因特网的计算机之间的“共同语言”。但是,网络协议通常是在安装系统的时候已经添加进电脑的,不需要另外独立安装。,

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