tailieunhanh - Lecture The dynamics of mass communication: Media in the digital age (10/e): Chapter 12 - Joseph R. Dominick

Chapter 12 - The internet and the world wide web. In this chapter we will discuss: A brief history of the computer, the internet, structure and features of the internet, the evolving internet, economics, feedback, social implications, the future: the evernet. | The Internet and the World Wide Web Chapter 12 © 2009, The McGraw-Hill Companies, Inc. All rights reserved. CHAPTER OUTLINE A Brief History of the Computer The Internet Structure And Features of the Internet The Evolving Internet Economics Feedback Social Implications The Future: The Evernet A BRIEF HISTORY OF THE COMPUTER Earliest computers were basically adding machines Pascal’s arithematique Babbage & Byron’s analytical engine Hollerith’s punch cards Aiken’s Mark I Transistors, integrated circuits (1950s) Personal computers (1970s) Modem Local Area Networks (LAN) THE INTERNET The Internet is a network of computer networks No one owns or run the Internet There is no “Internet company” From ARPANET to Internet (1 of 2) Cold War idea: keep vital computer networks connected Decentralized Information bundled in Internet Protocol packets ARPANET (Advanced Research projects Agency Network) 1980s NSF (National Science Foundation) More widespread network From ARPANET to Internet (2 of 2) 1990s key developments World Wide Web and hypertext Browsers Search engines Mid-2000s Internet more popular than ever 2005: more than 400 million host computers connected to web STRUCTURE AND FEATURES OF THE INTERNET TCP/IP: Transmission Control Protocol/ Internet Protocol Allows computers to talk with other computers Access to the Internet ISPs (Internet Service Providers) OSPs (Online Service Providers) E-Mail Electronic mail (e-mail) Fast, cheap, reliable Can send text, graphics, and much more Drawbacks Not suited for all message content Not as private as letters Spam Time loss Newsgroups Internet equivalent of bulletin boards Based on themes, or specialized topics People read and post messages More than 40,000 newsgroups World Wide Web WWW: network of varied information sources Hypertext allows nonlinear linkages The web is part of the Internet (terms not synonymous) WWW includes Web sites, web pages, home pages, portals URL: Uniform resource . | The Internet and the World Wide Web Chapter 12 © 2009, The McGraw-Hill Companies, Inc. All rights reserved. CHAPTER OUTLINE A Brief History of the Computer The Internet Structure And Features of the Internet The Evolving Internet Economics Feedback Social Implications The Future: The Evernet A BRIEF HISTORY OF THE COMPUTER Earliest computers were basically adding machines Pascal’s arithematique Babbage & Byron’s analytical engine Hollerith’s punch cards Aiken’s Mark I Transistors, integrated circuits (1950s) Personal computers (1970s) Modem Local Area Networks (LAN) THE INTERNET The Internet is a network of computer networks No one owns or run the Internet There is no “Internet company” From ARPANET to Internet (1 of 2) Cold War idea: keep vital computer networks connected Decentralized Information bundled in Internet Protocol packets ARPANET (Advanced Research projects Agency Network) 1980s NSF (National Science Foundation) More widespread network From ARPANET to