The Internet: Past & Present. Presentation by Donna Vakili. Narration by Bob West. Boise State Educational Technology Outreach Program. TELE COMMUNICATIONS. Tele phone Tele graph Tele scope Tele vision Definition: Share information over distance.
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The Internet: Past & Present Presentation by Donna Vakili Narration by Bob West Boise State Educational Technology Outreach Program
TELECOMMUNICATIONS • Telephone • Telegraph • Telescope • Television • Definition: Share information over distance. Boise State Educational Technology Outreach Program
BBS The Evolution of Telecommunications Boise State Educational Technology Outreach Program
1. Computer to Computer - Simplest Form of Telecommunications • Computers can exchange messages and transfer files. • You need a computer, a phone line, a modem, and telecommunications software. Boise State Educational Technology Outreach Program
What do MODEMS do? Translate Digital/Analog Signals • Telephone Lines - Analog • Computers - Digital • Baud Rate/BPS - Early days 300 baud or bits per second. Now 56K (56,000 bps) Boise State Educational Technology Outreach Program
BBS 2. BBS - Before the Internet, there were Bulletin Board Systems • Users given phone #, login & inexpensive software. • BBS administered by an individual(s) or group. • Group of messages organized by topic areas w/ conferences/forums stored on a central machine. • Computers are not linked together. They are only linked through a phone line to the BBS computer. • First BBS’s – Startrek & Chess Boise State Educational Technology Outreach Program
3. Networks • Interconnecting of Computer Stations and Peripheral Devices (printers) through cable. • Permits Resource Sharing - Software and Peripherals. • Promotes Cost Management - Stored at Central Server. • Facilitates Information Exchange. Boise State Educational Technology Outreach Program
Network – Is it a LAN or a WAN? • Local Area Networks (LAN) • Computers in close proximity to each other - 1 bldg or campus. • Wide Area Networks (WAN) • Spans Greater Distances and Covers a Wider Geographical Area Boise State Educational Technology Outreach Program
NETWORK WAN LAN ? Boise State Educational Technology Outreach Program
4. Inter-Networking • Interconnecting of Internets, through local networks, telephone, ISDN, Cable TV, wireless, cellular, private/ common carrier fiber, satellite, & submarine cable • Permits Resource Sharing on a global scale. • Traffic dynamically routed. Boise State Educational Technology Outreach Program
The Internet : What Is It?Definition: A vast global open information metanetwork (a network of networks) of computer hosts The World Wide Web (WWW) is a subset of the Internet. Internet Society <email@example.com>
35 years ago…. How to communicate in case of nuclear war?
Communication Requirements • There should be no central authority. If war, the center of the network would be first place to go. • All nodes should be equal to all other nodes. Each node should have the authority to originate, pass, and receive messages. • It should be designed from the beginning to operate in tatters. • Network would be assumed to be unreliable. Boise State Educational Technology Outreach Program
Solution: Packets • Messages are divided into packets. Each packet is separately addressed. Packets move through a network individually. Test a packet through TraceMaphttp://www.matrix.net/isr/tracemap Boise State Educational Technology Outreach Program
Solution: Packets Ottawa, CA Seattle Herndon, VA North Eastern Africa Los Angeles Austin & Dalls, TX Quito, Ecuador Boise State Educational Technology Outreach Program
Development of the Internet • 1969 - “Birth”ARPANET - Advanced Research Projects Agency Network. First node installed at UCLA • 1970’s - “Infancy” Developed protocols and hardware. • Early 1980’s - “Childhood” New networks developed - Computer Science Network (CSNET) and Because It’s Time (BITNET). Mainly universities and research sites. E-mail & discussion groups Boise State Educational Technology Outreach Program
Development of the Internet • Late 1980’s - “Training Wheels”PC created! More interconnection of LANs with WANs due to development of PC. • Early 1990’s - “Driver’s License!”World Wide Web created. Ability to transfer Hypertext via the Internet. User friendly; PC price and monthly connection fees dropped. Dramatically affected growth. Boise State Educational Technology Outreach Program
Development of the Internet • Mid/Late 1990’s - “Leaving Home”Information and Sociological Explosion - developed own culture, national vocabulary, business, educational, and gov’t sites. • Entering the 21st Century –“College”The Internet is firmly entrenched. Business, education, and gov’t explore ways to integrate it seamlessly in daily life through video, audio, wireless techn, and hand-held devices. Boise State Educational Technology Outreach Program
Global Internet Connectivity - 1994 Internet Society <firstname.lastname@example.org>
Global Internet Connectivity - 1997 Internet Society <email@example.com>
Interplanetary Internet Study “network of disconnected Internets” http://www.ipnsig.org/aboutstudy.htm Boise State Educational Technology Outreach Program
What is the Status of the Internet in the K-12 Classroom? Boise State Educational Technology Outreach Program
% of Public Schools vs. Classrooms with Internet Access 1994 to 1999 Source: US Dept. of Ed, National Center for Education Statistics (2000) Boise State Educational Technology Outreach Program
How Well Prepared are Teachers in Using the Internet for Instruction? 40% use Internet moderately or to a large extent 33% feel well-prepared to use the Internet Source: US Dept. of Ed, National Center for Education Statistics (2000) Boise State Educational Technology Outreach Program
“From Promise to Practice…” “The question is no longer if the Internet can be used to transform learning in new and powerful ways. The Commission has found that it can. Nor is the question should we invest the time, the energy, and the money necessary to fulfill its promise in defining and shaping new learning opportunity. The Commission believes that we should. We all have a role to play. It is time we collectively move the power of the Internet for learning from promise to practice.” (The Power of the Internet for Learning, Report of the Web-Based Education Commission to the President and the Congress of the United States, December 2000) Boise State Educational Technology Outreach Program
Why Telecommunications in the Classroom? • Provides real world audiences for communication and presentation and creates understanding of Global Society. • Develops research skills by bringing world’s libraries into classroom. • Develops writing and editing skills • Allows students to communicate over distance by sharing information, ideas, interests, collaborative projects, and questions. • Enables educators to share teaching methods and communicate with each other. Boise State Educational Technology Outreach Program
Integration Lesson Categories Research Presentation Communication (Synchronous/Asynchronous) Boise State Educational Technology Outreach Program
What is the Internet Society ? • The global international organization for open systems internetworking and the Internet • A common mechanism for: • standards making • operational administration and coordination • research coordination and education • global cooperation among national, regional, and other international bodies • An international means for sharing information and encouraging development of internet-related infrastructure and use around the world • Members consists of individuals and organizations - commercial, governmental, and non-profit • Contact www.isoc.org Graphics and many of the facts included in this presentation are courtesy of the Internet Society.