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截至21世纪初,运算成本下降至20世纪70年代初的1‰。现在互联网几乎可以连接任何物体。1993年中, 世界上还仅有约130家网站;但到2000年,网站数量已经超过1500万家。今天,在线人数已超过35亿;根据专家预测,到2020年,200亿台设备将通过物联网联系在一起。而这不过是我们信息革命的初期而已。

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