Page 1
Phones, tablets, TVs, and computers at home often go online without being plugged into a network cable.
家里的手机、平板、电视和电脑，常常不用插网络线，也能连接到互联网。正文预览
Page 2
That wireless connection is usually called Wi-Fi. It lets devices send and receive data through radio waves over short distances.
这种无线连接通常就叫 Wi-Fi，它让设备能在较短距离内通过无线电波收发数据。
Page 3
A router in the home acts like a traffic center, passing information between devices and the internet service coming into the house.
家里的路由器就像一个小小的交通中心，把屋内设备和进入家中的网络服务连接起来。
Page 4
Instead of carrying information inside a cable the whole way, Wi-Fi sends part of that information through the air.
Wi-Fi 和有线网络的不同之处在于，它会把一部分原本在线里传送的信息改成在空气中传送。
Page 5
Devices need the right network name and password so they can join the correct home network safely.
设备要输入正确的网络名称和密码，才能安全地加入家里的网络。
