The Internet is a collection of computer networks that are connected through the use of the Internet protocol suite. The Internet protocol suite is more commonly known as TCP/IP, which is comprised of,
TCP/IP evolved from the ARPANET computer network; a pioneering computer network which was established in 1969 by the Advanced Research Projects Agency (ARPANET). ARPANET was worked upon by two individuals: Vinton Cerf and Robert E. Kahn; these two gentlemen went on to develop TCP/IP, and have thus been coined the 'founders fathers of the Internet'. TCP/IP was developed throughout the 1970's; it was first adopted as a functional and standard network protocol in 1982 by the Department of Defense in the United States. TCP/IP is currently maintained by the Internet Engineering Task Force.
While the hierarchy of the Internet may seem somewhat archaic, computer networks are categorised into tiers: backbone servers at the top of the hierarchy and the humble home computer languishing at the bottom. The number of tiers is around about four;
The Internet is sometimes confused with the applications which work upon it: most commonly the World Wide Web or E-mail; neither of which should be confused as the Internet itself. The age of the Internet predates the World Wide Web by decades - although email is of a similar age. As has already been stated, the roots of the research that built the Internet date back to the 1960s; ARPANET, and Mark I at NPL, are credited as the computer networks which have evolved into the Internet.