| 1960 | | ARPANET | | | | | | | | 43000 | 3864000 28900000 | Download | Up- load | | | | | | | 1990 | 15% 400 | | | 3.5 | 10 | | 35 67% 55% | | | 43 1969 | ARPANET | 4 | | | 1974 62 | 1983 | Milnet | | | | | edu | com v | | mil | net org | | ca | au | uk | de | jp | mn | ru | cn | |