What is a wireless network card for computers 5

Cuifeng Jushi's is good, and the others are all broken files on and off the Internet.

1. Wireless LAN network card, to go through the wireless routing module to access the Internet, (within a certain range) ** in 150 300

2. Wireless WAN network card (now there is CDMA GPRS), telecom has CDMA and GPRS, China Unicom only has CDMA, the fastest speed is 243K Unicom, but it takes 2100 a year.

The GPRS of telecommunications is about the same as CDMA, which costs 1200 a year.

You can go to all parts of the country to surf the Internet If you get lost in the big forest, you can GPRS locator and find you.

The price of the network card is around 500.

1. The so-called wireless network is a wireless local area network (WLAN) composed of radio waves as a medium for information transmission, which is very similar to the purpose of the wired network, the biggest difference is the difference in the transmission medium, and the use of radio technology to replace the network cable can be backed up with the wired network.

2. There are three common standards:

IEEE: Uses the 5GHz band, the transmission speed is 54Mbps, and it is not compatible.

IEEE: Frequency band, transmission speed 11Mbps

IEEE: Using frequency bands, the transmission speed is 54Mbps, which is backward compatible.

Currently, IEEE is the most commonly used, but IEEE has the power of next-generation standards.

3. A wireless network card alone cannot be connected to a wireless network, and a wireless AP must also be used, which is equivalent to a hub for a wired network. The wireless network can only be connected if the wireless AP can be covered by the appropriate settings.

Wireless Internet access relies on wireless network cards, of course, supporting wireless routing (wireless cat).

The wireless network card is equivalent to the receiver, and the wireless router (wireless modem) is equivalent to the transmitter. In fact, it is still necessary to connect the wired Internet line to the wireless modem, and then convert the signal into a wireless signal and transmit it out, which is received by the wireless network card.

Generally, the wireless router can drag 2 4 wireless network cards, and the working distance is within 50 meters, and the communication quality is very poor. Strictly speaking, this wireless solution is just a wireless network, and the working environment must be next to the wired network.

The price of a set ranges from 300 to 800.

The other is pure wireless, which requires communication equipment, such as satellite receivers, or mobile phones that can access the Internet, etc., these things are connected to the computer through a special data line, and they receive signals from satellite or wireless network services, but the speed is not very good, and the communication cost is super expensive. And satellite receivers and mobile phones are also expensive, usually ranging from 3000 to 5000, the advantage is that even if you are in the wilderness, you can also access the Internet (of course, you must have a computer).

Both of these solutions can be used on laptops and desktops, of course, desktops are inconvenient to move in the first place, and wireless doesn't make much sense.

It is the hardware that uses the mobile phone card to access the Internet. It's not fast. My card only has a speed of 26k s.

Two kinds of 1: Unlimited modules through hotspot Internet access, there is a hotspot on Starbucks 2: A hardware plugged CDMA dial-up card! There are very few hot spots in our country, which generally refers to the latter.

It's the difference between a mobile phone and a fixed **.

It is a network card that does not need wiring.

The business hall handles a wireless network card (Internet access through mobile phone signal), and the network card of the general notebook is a wireless network card (Internet access through WiFi signal).

It is a wireless network card, and a wireless network card is a device for terminal wireless network, and it is a wireless terminal device that is used for Internet access through a wireless connection network under the wireless coverage of wireless LAN. Specifically, the wireless network card is a device that enables your computer to use wireless Internet access, but with a wireless network card, you also need a wireless network that can be connected, if there is a wireless router or wireless AP coverage at home or location, you can connect to the wireless network through the wireless network card to connect to the Internet in a wireless way. Please adopt.

Now they are all U-port wireless network cards,

Wireless network card, as long as there is a mobile phone signal can access the Internet, wireless network card needs to cooperate with wireless routing to access the Internet.

The so-called wireless network is a wireless local area network (WLAN) composed of radio waves as the medium of information transmission, which is very similar to the purpose of the wired network, the biggest difference is the difference in the transmission medium, the use of radio technology to replace the network cable, can be backed up with the wired network, but the speed is too slow.

The wireless network card is a device for terminal wireless network, and it is a wireless terminal device for Internet access through wireless connection network under the wireless coverage of wireless LAN. Specifically, the wireless network card is a device that enables your computer to use wireless Internet access, but with a wireless network card, you also need a wireless network that can be connected, if you have a wireless router or wireless AP coverage at home or location, you can connect to the wireless network through the wireless network card to connect to the Internet in a wireless way.