InternetThe Internet is a worldwide computer network connecting other computer networks in government, business, academia, and other public and private sources. Communications are facilitated by the Internet Protocol Suite (TCP/IP), originally proposed by Vinton Cerf and Robert Kahn in 1974. The Internet is used for implementing various applications including electronic mail, pioneered in the late 1960s, and the World Wide Web (WWW) of linkable documents. The idea of networks connecting information nodes appeared in futuristic scientific writings and science fiction beginning in the early twentieth century.