Internet, Intranets, Extranets, and Virtual Private Networks
With the rise of networks and the corresponding decline of mainframe services computers have become communication devices instead of being solely computational or typewriter-like devices. Corporate networks become increasingly important and often use the Internet as a public service network to interconnect. Sometimes they are  proprietary networks.
Software companies, consulting agencies, and journalists serving their interests make some further differences by splitting up the easily understandable term "proprietary networks" into terms to be explained and speak of Intranets, Extranets, and Virtual Private Networks.
Cable TV networks and online services as Europe Online, America Online, and Microsoft Network are also proprietary networks. Although their services resemble Internet services, they offer an alternative telecommunication infrastructure with access to Internet services for their subscribers.
America Online is selling its service under the slogan "We organize the Web for you!" Such promises are more frightening than promising because "organizing" is increasingly equated with "filtering" of seemingly objectionable messages and "rating" of content. For more information on these issues, click here If you want to know more about the technical nature of computer networks, here is a link to the corresponding article in the  Encyclopaedia Britannica.
Especially for financial transactions, secure proprietary networks become increasingly important. When you transfer funds from your banking account to an account in another country, it is done through the SWIFT network, the network of the Society for Worldwide Interbank Financial Telecommunication (SWIFT). According to SWIFT, in 1998 the average daily value of payments messages was estimated to be above U$ 2 trillion.
Electronic Communications Networks as Instinet force stock exchanges to redefine their positions in trading of equities. They offer faster trading at reduced costs and better prices on trades for brokers and institutional investors as mutual funds and pension funds. Last, but not least clients are not restricted to trading hours and can trade anonymously and directly, thereby bypassing stock exchanges.
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Apple
Founded by Steve Jobs and Steve Wozniak and headquartered in Cupertino, USA, Apple Computer was the first commercially successful personal computer company.
In 1978 Wozniak invented the first personal computer, the Apple II. IBM countered its successful introduction to the market by introducing a personal computer running MS-DOS, the operating system supplied by Microsoft Corporation. And IBM gained leadership again. Although by introducing the first graphical user interface affordable to consumers having started the desktop publishing revolution, Apple could not regain leadership again.
http://www.apple.com
For more detailed information see the Encyclopaedia Britannica: http://www.britannica.com/bcom/eb/article/6/0,5716,115726+1+108787,00.html
 http://www.apple.com/
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