Then came e-mail a few years later, a core communications protocol called TCP/IP in the late 70s, the domain name system in the 80s and the World Wide Web - now the second most popular application behind e-mail - in 1990.
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- 幾年之后,電子郵件出現了,這是在70年代晚期被稱(chēng)為tcp/IP的核心通信協(xié)議。80年代出現了域名系統,1990年,萬(wàn)維網(wǎng)問(wèn)世,并成為僅次于電子郵件的最流行的應用工具。
