1G,2G,3G,4G,5G，这个G到底是什么意思的G
生活在这个时代的人是幸运的，在历史的任何一个时代都没有像今天这样如此方便的获取资讯，这得益于通讯技术的发展，我们是通讯技术的见证者，同时也是通讯技术的消费者，但要我们说出通讯技术的所以然，相信很多人是一片空白；今天我们就聊一下和我们生活息息相关的通讯技术的一些知识。
首先，G是generation缩写，中文意思是一代的意思，因此1G就是一代，2G就是二代，以此类推。
1G:第一代移动通信技术是指最初的模拟、仅限语音的蜂窝电话标准，制定于上世纪80年代，在1G时代摩托罗拉是王者，世界上第一台1G通讯设备SCR300就出自摩托罗拉之手，这个1940年产的设备有没有觉得碉堡了。
摩托罗拉SCR300
摩托罗拉SCR300
2G:20世纪80年代以数字技术为主体的第二代移动通信系统开始发展，包括GSM、D-AMPS、PDC（日本数字蜂窝系统）和IS-95CDMA等，仍然是窄带系统。现有的移动通信网络主要以第二代的GSM和CDMA为主，采用GSM
GPRS、CDMA的IS-95B技术。诺基亚，摩托罗拉，索尼爱立信是2G时代的经典代表。
因为2G技术的成熟，让我们可以上网了，还记得当时登入的网页版的3GQQ吗？还记得30M的流量就可以用一个月的时代吗？现在想起来是不是有点不可思议。
3GQQ聊天页面
3G:第三代移动通信系统的概念最早于1985年由国际电信联盟提出，是首个以“全球标准”为目标的移动通信系统，主流标准分别是WCDMA（宽带CDMA），CDMA200和TD-SCDMA。
3G时代可以上网看视频了，对于宅男宅女是福音，看个视频追个剧是没有问题的，甚至偷偷看一下爱情动作片也是可以的，虽然会有些卡，但有总比没有强。还有就是微信，QQ等视讯软件飞速发展，也革了短信的命，从此短信只是用来看验证码的，接受诈骗短信用的。
4G:第四代移动通信系统,4G时代也视频的时代，抖音，快手，火山，西瓜视频等短视频APP快速崛起，同时网红迅速发展，今天还是某某妹红起来了，明天就有可能是某某哥窜红，今天这家的小孩给网红主播刷光了家长的卡，明天那家的老公把工资全部献给了某网红主播，后天又有那个公务员为了心爱的主播摞用公款。
5G:未来却近在咫尺的第五代通讯系统。听说会很牛叉，我们拭目以待。
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