Xem mẫu

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 2 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) 3 THE INTERNET • The Internet is a network of computer networks • No one owns or run the Internet • There is no “Internet company” 4 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 5 ... - tailieumienphi.vn
nguon tai.lieu . vn