无线网卡与无线上网卡的区别

无线网卡与无线上网卡的区别 如今，网络技术发展迅猛，人们足不出户即可在线购买自己想要的东西，也可以通过网络了解社会、经济、人文等各个方面的知识。还可以在网上看电视、看电影、玩游戏，可以说网络已经充分融入我们的生活。 在有线网络发展的同时，人们根据自身的需求又开发出更为高科技的无线网络技术，这种技术将有线网络所需的繁琐布线工序抛开，完全能够在中小范围内无线上网。 简单无线网络示意图 虽然无线网络已有长足发展，但大多数人对无线网络产品还比较陌生。无线路由器、无线网卡、无线上网卡这三类产品相信大家都见过或者听说过，但具体有何用处，如何使用，今天就为大家简单介绍一下。 首先为大家说一下什么是无线网络，无线网络与有线网络的用途相似，最大的区别在于传输媒介不同，无线网络通过无线电技术取代了网线，同时它可以和有线网络互为备份。 speed up technology results into, active guide enterprise will mature technology results into for productivity, and Translate into economic benefits, efforts to solve economic and technological "two peels" phenomenon, says from the Dongping real, is to provide research institutions with more into place. Strengthening the agricultural scientific and technological achievements in the field to improve efforts to help farmers, crop planting, processing, animal husbandry and other agricultural products, increase the intensity of transforming scientific and technological innovation, science and technology to improve agricultural efficiency, improve the mass income and services immigrants safe haven siege works. Wuhan Institute of freshwater should give full play to the Chinese Academy of Sciences, and improving the added value of Dongping Lake aquatic products. 1th, in the middle of this yearProposed to increase the level of modernization in agriculture, hoping the county levels to seriously study the documents. 18 plenary session "storing food in, storing food in land", this requirement is very high, population, food is not enough, and not completely rely on imports, has to rely on technology to increase food production and limited land mass, relevant departments at the county level in particular, agricultural sector, active docking tertiary institutions, the Institute took the lead in the 11N无线路由器 那什么是无线路由器呢,无线路由器就是能够实现无线传输功能的路由器产品，它是通 过发射无线信号与已安装无线网卡并取得联接的电脑进行数据传输的设备。 11g无线路由器 有人会问什么是11g和11N路由器，有什么区别呢,802.11n的速度是802.11g的12 倍，传播信号的范围是802.11g的4倍，高端产品价格方面也差不少。 speed up technology results into, active guide enterprise will mature technology results into for productivity, and Translate into economic benefits, efforts to solve economic and technological "two peels" phenomenon, says from the Dongping real, is to provide research institutions with more into place. Strengthening the agricultural scientific and technological achievements in the field to improve efforts to help farmers, crop planting, processing, animal husbandry and other agricultural products, increase the intensity of transforming scientific and technological innovation, science and technology to improve agricultural efficiency, improve the mass income and services immigrants safe haven siege works. Wuhan Institute of freshwater should give full play to the Chinese Academy of Sciences, and improving the added value of Dongping Lake aquatic products. 1th, in the middle of this yearProposed to increase the level of modernization in agriculture, hoping the county levels to seriously study the documents. 18 plenary session "storing food in, storing food in land", this requirement is very high, population, food is not enough, and not completely rely on imports, has to rely on technology to increase food production and limited land mass, relevant departments at the county level in particular, agricultural sector, active docking tertiary institutions, the Institute took the lead in the 兼容性方面，802.11n技术与802.11b和802.11g技术有所不同,它的优势主要体现在混合模式下的运行并且能够向下兼容。802.11n网络在和802.11g/b产品一起运行时必须保持最适当的速度。保证在使用802.11n的条件下,基于现有标准的无线产品的运行能够达到各自的最佳状态。 11N无线路由器 举例来说，802.11g的理论最大速度为54M，通过简单测试，在无线网络环境较好的情况下，传输100MB的文件需要30秒左右。在相同的环境，换为支持802.11n的产品,传输100MB的文件只需3,4秒左右。 根据无线路由器的性能不同，一般的无线路由器可以拖2,4个无线网卡，工作距离在50米以内效果较好，远了通信质量就会很差。 下面我们来介绍一下无线网卡，什么是无线网卡呢,无线网卡是与无线路由器搭配使用的，他们就好比“亲兄弟”，少了谁都不能实现无线上网。 书面定义无线网卡是在无线局域网的信号覆盖下，通过无线连接网络进行上网的无线终端设备。简单来说，无线网卡就是使你的电脑可以无线上网的一个装置，它与提供无线环境的路由器配合才能实现用户的无线上网。 speed up technology results into, active guide enterprise will mature technology results into for productivity, and Translate into economic benefits, efforts to solve economic and technological "two peels" phenomenon, says from the Dongping real, is to provide research institutions with more into place. Strengthening the agricultural scientific and technological achievements in the field to improve efforts to help farmers, crop planting, processing, animal husbandry and other agricultural products, increase the intensity of transforming scientific and technological innovation, science and technology to improve agricultural efficiency, improve the mass income and services immigrants safe haven siege works. Wuhan Institute of freshwater should give full play to the Chinese Academy of Sciences, and improving the added value of Dongping Lake aquatic products. 1th, in the middle of this yearProposed to increase the level of modernization in agriculture, hoping the county levels to seriously study the documents. 18 plenary session "storing food in, storing food in land", this requirement is very high, population, food is not enough, and not completely rely on imports, has to rely on technology to increase food production and limited land mass, relevant departments at the county level in particular, agricultural sector, active docking tertiary institutions, the Institute took the lead in the 无线网卡 无线网卡也有网络标准的区分，不同的标准决定了了不同的速度。主要分为IEEE 802.11a/b/g/11n(Draft 2.0)。下面提供一下它们的具体信息来帮助用户区分。 IEEE 802.11a :使用5GHz频段，传输速度54Mbps，与802.11b不兼容。 IEEE 802.11b :使用2.4GHz频段，传输速度11Mbps。 IEEE 802.11g :使用2.4GHz频段，传输速度54Mbps，可向下兼容802.11b。 IEEE 802.11n(Draft 2.0) :用于Intel迅驰4笔记本和高端路由上，即将全面推广，可向下兼容，目前市场的主流产品都采用此标准。 无线网卡就好比是接收器，无线路由器相当于发射器。首先要将Internet有线接入到猫上，再将猫联接到无线路由器上，然后由无线路由器将有线信号转化为无线信号发射出去，电脑通过无线网卡接收信号，从而实现无线上网。 speed up technology results into, active guide enterprise will mature technology results into for productivity, and Translate into economic benefits, efforts to solve economic and technological "two peels" phenomenon, says from the Dongping real, is to provide research institutions with more into place. Strengthening the agricultural scientific and technological achievements in the field to improve efforts to help farmers, crop planting, processing, animal husbandry and other agricultural products, increase the intensity of transforming scientific and technological innovation, science and technology to improve agricultural efficiency, improve the mass income and services immigrants safe haven siege works. Wuhan Institute of freshwater should give full play to the Chinese Academy of Sciences, and improving the added value of Dongping Lake aquatic products. 1th, in the middle of this yearProposed to increase the level of modernization in agriculture, hoping the county levels to seriously study the documents. 18 plenary session "storing food in, storing food in land", this requirement is very high, population, food is not enough, and not completely rely on imports, has to rely on technology to increase food production and limited land mass, relevant departments at the county level in particular, agricultural sector, active docking tertiary institutions, the Institute took the lead in the PCI接口无线网卡 PCMCIA接口无线网卡 speed up technology results into, active guide enterprise will mature technology results into for productivity, and Translate into economic benefits, efforts to solve economic and technological "two peels" phenomenon, says from the Dongping real, is to provide research institutions with more into place. Strengthening the agricultural scientific and technological achievements in the field to improve efforts to help farmers, crop planting, processing, animal husbandry and other agricultural products, increase the intensity of transforming scientific and technological innovation, science and technology to improve agricultural efficiency, improve the mass income and services immigrants safe haven siege works. Wuhan Institute of freshwater should give full play to the Chinese Academy of Sciences, and improving the added value of Dongping Lake aquatic products. 1th, in the middle of this yearProposed to increase the level of modernization in agriculture, hoping the county levels to seriously study the documents. 18 plenary session "storing food in, storing food in land", this requirement is very high, population, food is not enough, and not completely rely on imports, has to rely on technology to increase food production and limited land mass, relevant departments at the county level in particular, agricultural sector, active docking tertiary institutions, the Institute took the lead in the USB接口无线网卡 如今的无线网卡种类齐全,主要为PCI接口、PCMCIA接口和USB接口。PCI接口是为台式机用户无线上网设计的，USB接口设备既可在台式机使用，也可在笔记本使用,而PCMCIA接口只能在笔记本电脑使用。 下面给大家介绍一下无线上网卡，许多人会把无线网卡与无线上网卡搞混，其实它们两个是完全不同的产品。 无线上网卡是可以在任何被手机信号覆盖的地方,通过手机SIM卡联接到互联网的设备。国内，无线上网卡支持中国移动的GPRS、其升级版本EDGE、中国联通的CDMA 1X三种网络。 从价格上最容易区分无线网卡与无线上网卡，一般无线网卡价格在200元甚至百元之内,而无线上网卡少则200,300，多则上千元。 无线上网卡的接口也有区别，现在的主流接口有USB、PCMICA、CF、Express card,少数采用SD接口。 PCMCIA接口适合笔记本电脑用户使用，其接口带宽基于 PCI总线，速度表现自然最为出色。PCMCIA接口的无线上网卡接入电脑后能够完全没入电脑内部，携带十分方便。不过目前笔记本处于过度阶段，有些新产品更趋向于Express card接口。 speed up technology results into, active guide enterprise will mature technology results into for productivity, and Translate into economic benefits, efforts to solve economic and technological "two peels" phenomenon, says from the Dongping real, is to provide research institutions with more into place. Strengthening the agricultural scientific and technological achievements in the field to improve efforts to help farmers, crop planting, processing, animal husbandry and other agricultural products, increase the intensity of transforming scientific and technological innovation, science and technology to improve agricultural efficiency, improve the mass income and services immigrants safe haven siege works. Wuhan Institute of freshwater should give full play to the Chinese Academy of Sciences, and improving the added value of Dongping Lake aquatic products. 1th, in the middle of this yearProposed to increase the level of modernization in agriculture, hoping the county levels to seriously study the documents. 18 plenary session "storing food in, storing food in land", this requirement is very high, population, food is not enough, and not completely rely on imports, has to rely on technology to increase food production and limited land mass, relevant departments at the county level in particular, agricultural sector, active docking tertiary institutions, the Institute took the lead in the PCMCIA接口无线上网卡 CF接口比PCMCIA接口要小一些，其最大优势是它能够通过转换器转换为PCMCIA接口，使用起来非常方便，转换器的价格也只有几十元。CF接口的无线上网卡主要是针对PDA(掌上电脑)以及UMPC(一种新式便携电脑)等设备。 CF接口无线上网卡 USB无线上网卡的最大缺陷是不能隐藏在笔记本内部，携带上有所不便，不过USB接口能够兼容笔记本和台式机。 speed up technology results into, active guide enterprise will mature technology results into for productivity, and Translate into economic benefits, efforts to solve economic and technological "two peels" phenomenon, says from the Dongping real, is to provide research institutions with more into place. Strengthening the agricultural scientific and technological achievements in the field to improve efforts to help farmers, crop planting, processing, animal husbandry and other agricultural products, increase the intensity of transforming scientific and technological innovation, science and technology to improve agricultural efficiency, improve the mass income and services immigrants safe haven siege works. Wuhan Institute of freshwater should give full play to the Chinese Academy of Sciences, and improving the added value of Dongping Lake aquatic products. 1th, in the middle of this yearProposed to increase the level of modernization in agriculture, hoping the county levels to seriously study the documents. 18 plenary session "storing food in, storing food in land", this requirement is very high, population, food is not enough, and not completely rely on imports, has to rely on technology to increase food production and limited land mass, relevant departments at the county level in particular, agricultural sector, active docking tertiary institutions, the Institute took the lead in the USB口无线上网卡 Express card是目前较为先进的一种接口，在市场上也较为常见。其产品与PCMCIA 接口的产品一样，在联接时能够完全没入笔记本内部，携带十分方便。所以，购买笔记本时 看看本本是否支持Express card接口。 Express Card接口无线上网卡 speed up technology results into, active guide enterprise will mature technology results into for productivity, and Translate into economic benefits, efforts to solve economic and technological "two peels" phenomenon, says from the Dongping real, is to provide research institutions with more into place. Strengthening the agricultural scientific and technological achievements in the field to improve efforts to help farmers, crop planting, processing, animal husbandry and other agricultural products, increase the intensity of transforming scientific and technological innovation, science and technology to improve agricultural efficiency, improve the mass income and services immigrants safe haven siege works. Wuhan Institute of freshwater should give full play to the Chinese Academy of Sciences, and improving the added value of Dongping Lake aquatic products. 1th, in the middle of this yearProposed to increase the level of modernization in agriculture, hoping the county levels to seriously study the documents. 18 plenary session "storing food in, storing food in land", this requirement is very high, population, food is not enough, and not completely rely on imports, has to rely on technology to increase food production and limited land mass, relevant departments at the county level in particular, agricultural sector, active docking tertiary institutions, the Institute took the lead in the 提示:购买无线上网卡前，先了解您所在区域属于哪个网络覆盖范围，或者哪个网络信 号相对较好，然后再购买相应产品 speed up technology results into, active guide enterprise will mature technology results into for productivity, and Translate into economic benefits, efforts to solve economic and technological "two peels" phenomenon, says from the Dongping real, is to provide research institutions with more into place. Strengthening the agricultural scientific and technological achievements in the field to improve efforts to help farmers, crop planting, processing, animal husbandry and other agricultural products, increase the intensity of transforming scientific and technological innovation, science and technology to improve agricultural efficiency, improve the mass income and services immigrants safe haven siege works. Wuhan Institute of freshwater should give full play to the Chinese Academy of Sciences, and improving the added value of Dongping Lake aquatic products. 1th, in the middle of this yearProposed to increase the level of modernization in agriculture, hoping the county levels to seriously study the documents. 18 plenary session "storing food in, storing food in land", this requirement is very high, population, food is not enough, and not completely rely on imports, has to rely on technology to increase food production and limited land mass, relevant departments at the county level in particular, agricultural sector, active docking tertiary institutions, the Institute took the lead in the