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第443章 特色疾病(1 / 2)

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【但是由于长途电话的增加,旋转电话的脉冲信号受到了传输距离的限制。】

【于是新的电话形式按键音电话出现,也就是小时候家庭里普遍使用的电话。】

【每个电话按键可以产生两种音调的组合来标识,这些音调可以在现有电话线的语音频带上传输。】

【但使用音调也带来了一个漏洞,那就是当电话公司用2600赫兹的音调来检测线路是否空闲时,他们可以发送相同的音调,让系统误以为通话已经断开,这时候就可以免费拨打电话了。】

【而发现这个漏洞的人正是乔布斯和沃兹尼亚克,他们也因此赚到了人生中的第一桶金。】

【但电话公司也发现了这个漏洞,他们开发了新的信号系统SS7,这套系统可以将语音信号和控制信号分开从而杜绝了发送音调控制电话的可能性,并且一直沿用至今。】

(乔布斯居然还干过这种事?)

(啧啧啧,要不人家能成立苹果,能干到世界第一呢。)

(果然牛逼的人年纪轻轻就很厉害了。)

(我想知道他们没有被抓吗,靠这种漏洞赚钱应该是违法的吧。)

(说不定漂亮国对这种事不管呢,谁说的清呢?)

而不明真相的古人们则是好奇的问道:“所以这什么乔布斯是个卖苹果的?还卖成了世界第一?”

“不过这和电话有什么关系呢?也不搭边啊!”

【再往后这种固定电话的发展暂时也就到头了,人们开始追求更加小巧方便的移动电话,也就是手机了。】

【移动电话也是从最开始能只能打电话,但却能砸死人的大哥大。】

【之后的手机不仅体积越做越小,而且还吸收了如相机、传呼机、MP3、MP4等机器的功能,增加了发短信、拍照、听歌、看视频、玩游戏、联网等功能。】

【这使得手机更加的娱乐化,其原本的通讯功能已经不再是主要的卖点了。】

【最后智能手机的出现则是将手机带入了另一个维度,发展到如的智能手机除了算力外其实已经和电脑没有什么区别了。】

【各大厂商卷的除了拍照就是游戏,或者系统流畅度,再不济就是在外观上做改变,什么小折叠、三折叠之类的。】

【但是如同“史端桥交换机”和“智能手机”这种足以颠覆行业的产品是没有出现的。】

【至于那该是一种怎么样的产品,嗯.....可能暂时也没有人知道吧。】

“怎么感觉后世人好像还很不乐意的样子,是觉得还不够方便吗?”

“对啊,我们才将千里传音,可他们一通电话就是几千公里,除此之外还有那么多功能这还不满意?”

“不过真要是想象下一代电话的话,最好是那种直接能把人传送过来的,这才够厉害。”

听着天幕有些沮丧的语气,古人们感觉到了一股浓浓的凡尔赛的味道。

你们要是那么嫌弃不如给我们啊,我们是不挑的,只要能够打电话就行。

———————分割线—————————

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