NPL (UK) 1970 Network Information Center (NIC) 1971 Merit Network's packet-switched network operational 1971 Tymnet packet-switched network 1972 Internet Assigned Numbers Authority (IANA) established 1973 CYCLADES network demonstrated 1974 Telenet packet-switched network 1976 X.25 protocol approved 1978 Minitel introduced 1979 Internet Activities Board (IAB) 1980 USENET news using UUCP 1980 Ethernet