Practical Wireless LAN

Preface

With the emergence and application of wireless Internet technologies such as wireless LAN (WLAN) and third-generation Internet technology (3G), a new type of network-wireless network makes people's online life more comfortable, it's no longer the case to walk anywhere in the smart building with a laptop, download documents anytime, anywhere, and print documents. During the APEC meeting in Shanghai, some large hotels and hotels have implemented Wireless LAN. Next we will introduce a common wireless network technology-Wireless LAN technology, to see how a network without network cable restrictions look like.

Current price of wireless network cards

Name: Intel anypoint wireless network adapter (USB Interface)
Function: used like a nic, shared Internet access, etc.
System Platform: Windows 9x series, Windows ME, Windows 2000, and Windows XP are supported.
Networking: a maximum of 20 computers can be connected simultaneously.
Network Connection distance: 50 meters can be blocked by doors or walls, and 120 meters of open space. The performance is stable.
External Power Supply: no external power supply is required.
Current Price: 350 RMB per pair (two NICS)

Infrared LAN Construction Practice

The local area network that uses infrared rays as transmission means is mainly used on mobile terminal devices such as laptops and handheld computers. At present, most laptops and handheld computers are equipped with infrared transmission devices, the maximum transmission speed can reach 115.2 kbps, and the transmission distance is generally within 5 meters.

We now have two laptops and one handheld computer. Now we need to build a local network between them:

Step 1: install an infrared device

Generally, drivers with infrared devices are installed in windows.ProgramThe system will automatically install the driver for the detected infrared device. We can find the infrared icon in the control panel.

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