1 / 33

ETT 429 Spring 2007

ETT 429 Spring 2007. History of Computers. History of Computers Timeline. Abacus---Approximately 3000 BC Calculators---1600s Punched Card Devices---1800s First Electronic Computers---1940s Mainframes---1950s Minicomputers---1960s Microcomputers---1970s Microcomputer Systems---1980s

lesley
Télécharger la présentation

ETT 429 Spring 2007

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ETT 429Spring 2007 History of Computers

  2. History of Computers Timeline • Abacus---Approximately 3000 BC • Calculators---1600s • Punched Card Devices---1800s • First Electronic Computers---1940s • Mainframes---1950s • Minicomputers---1960s • Microcomputers---1970s • Microcomputer Systems---1980s • Internet---1990s

  3. Ancient ComputingHistory The Abacus Mechanical aid used for counting and making quick calculations. Still in use around the world.

  4. Early Computing History Blaise Pascal Invented the first mechanical calculator. The Pascalineused cogs and gears to solve math equations.

  5. Mechanical Calculators • First “programmable”machine. • Used punched cards (binary instructions) to automate weaving loom. • Punched cards were a staple of early and modern computer programming. Joseph Jacquard

  6. Electronic Computer Systems First Generation:1943-1956 • Used vacuum tubes in electronic circuits. • Used punch cards to input and externally store data. • Up to 4K of memory. • Programming in machine language and assembly language. • Required a compiler.

  7. First Generation: 1943-1956 Electronic Numerical Integrator and Calculator (ENIAC) World’s first electronic digital computer. Used to produce WWII ballistic firing tables for the U.S. Defense Department.

  8. Second Generation: 1957-1964 • Used transistors, developed by Bell Labs. • Up to 32K of memory. • Programming in computer languages, such as FORTRAN and COBOL. 1956 IBM 350 RAMAC

  9. Third Generation: 1965-1971 • Used integrated circuits. • Up to 3 million bytes of memory. • Lower cost, smaller size, and increasing processor speed.

  10. Fourth Generation: 1972-Now (1) Microcomputer Revolution Begins. • 1971, Intel develops 4004, the first microprocessor chip. • Altair sold in 1975, the first personal computer. It is a kit that must be assembled. • Apple Computer is formed in 1976 and sells 50 Apple I. • Advances increase memory size, storage space, and processing speeds.

  11. Fourth Generation: 1972-Now (2) • Personal computers or PCs. • Usually cost about $2,000 or less. • Process over 1 billion operations per second. • “Stand-alone” or connected to other computers as a network system. Microcomputers TEA

  12. 1990’s Connecting the World (1) • Tim Berners-Lee • Developed HTML and the World Wide Web (WWW) was born.

  13. 1990’s Connecting the World (2) Marc Andreessen • An original developer of Mosaic, the first browser software able to read HTML. • Co-founder of Netscape Communications.

  14. The 21st Century • Wireless Technology. • Truly individualized education. • Internet current primary trend. • Distance Education • Communication with colleagues. • Lesson plan preparation. • Student resources. • Access research and best practices for teaching. 05:34.0 TEA

  15. Question Has technology changed how and what we teach?

  16. Modern Educational Technology History (1) • First instructional use of computers was as a flight simulator used to train pilots at MIT in 1950. Mainframe Computer Systems

  17. Modern Ed Tech History (2) Mainframe Computer Systems • First use in public schools taught New York elementary students binary arithmetic in 1959.

  18. Modern Ed Tech History (3) Mainframe Computer Systems • Federal funds supported many large-scale projects in mainframe computer-assisted instruction (CAI) in schools, colleges, and universities through the middle of 1970’s.

  19. Modern Ed Tech History (4) Mainframe Computer Systems • Stanford University – first multimedia learning station, Course writer • Programmed Logic for Automatic Teaching Operations (PLATO) • BYU – Time-shared Interactive Computer-Controlled Information Television (TICCIT)

  20. Modern Ed Tech History (5) Mainframe Computer Systems Designed to support personalizedmastery learning • Individually Prescribed Instruction (IPI) - University of Pittsburgh • Program for Learning in Accordance with Needs (PLAN) - American Institutes of Research

  21. Modern Ed Tech History (6) National Education Computing Conference (NECC) • Created by mainframe programming enthusiasts from universities nationwide. • First conference held in1979. • Today is the largest educational technology conference in U.S. with attendance of 10,000+ people.

  22. Modern Ed Tech History (7) • Introduced in late 1970’s. • Adopted by public school systems during 1980’s. • Apple II • Commodore PET • Radio Shack TRS - 80 Microcomputers in Education

  23. Modern Ed Tech History (8) • Early courseware developed for mainframes were provided by: • Large hardware manufacturers • Software systems companies • University development projects • New microcomputer software market driven primarily by educators. Software

  24. Modern Ed Tech History (9) • Minnesota Educational Computing Consortium (MECC) • Initially largest provider of educational software. • Funded by National Science Foundation. • MicroSift, EPIE • Provided courseware evaluations. Software

  25. Modern Ed Tech History (10) Software • Authoring systems • Response to educators quest for input into design of educational software. • Allowed educators to develop their own courseware. TEA 15:05.0

  26. TEA Modern Ed Tech History (11) Software • Authoring systems • Required extensive expertise. • Extended time commitment. • Expanded work investment.

  27. Modern Ed Tech History (12) Computer Literacy • Originally defined as programming skills and tools such as word processing. • Today’s world can only agree that the term refers to skills that are constantly changing. 15:45.0

  28. Modern Ed Tech History (13) The Internet and the WWW Biggest challenge for the public educational system has been how to prepare schools physically and train teachers effectively for its use in the classroom. 16:50.0 TEA

  29. Conclusions (1) • Computer literacy or knowledge of computer applications is a moving target. • Teaching students technical skills for today is valuable. • More important are “learning to learn” tools for tomorrow and years to come. 17:20.0

  30. Conclusions (2) • Computer-based materials are just one component of resources available to educational system. • Integration of technology as a tool to advance learning in the content areas adds to the effectiveness of other resources and teacher created activities. 18:00.0

  31. Conclusions (3) • Educators must keep pace with technological advances. • But often times technology changes faster than the educational environment. • Business and Industry must do it’s part in providing economical technology solutions. 18:40.0

  32. Reference/Bibliography • Lecture adopted from Texas Center for Educational Technology: http://64.233.167.104/search?q=cache:xjL2tYA6sI0J:www.tcet.unt.edu/weblibrary/ppt/techist.ppt+PowerPoint+Presentation+for+History+of+Computers&hl=en&gl=us&ct=clnk&cd=2

  33. For Next Class • Read Office pages 2-15 & 18-111

More Related