The earliest form of the Internet is called the ARPAnet , which links together computers at research facilities in the United States. The ARPAnet continues to grow internationally and becomes a high-speed digital post office as people use it to collaborate on research projects and discuss various topics of interest. In 1974, the public gets its first vague hint of how networked computers can be used in daily life as a commercial version of the ARPAnet goes online. A private company opens Telnet , the first commercial version of the ARPAnet. In the mid 1980s the boom in the personal computer market allows many companies to join the Internet for the first time.
Corporations begin to use the Internet to communicate with each other and with their customers.
By the end of the 1980s, the Internet exceeds 10,000 hosts. The ARPAnet is replaced by the National Science Foundation Network NSFnet which has created a better way to connect the independent networks. Gophers precede the World Wide Web and influence its development. Student programmers develop a graphical browser for the WWW called Mosaic. In 1994 a graphical WWW browser called Netscape is introduced.