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COMP6005 An Introduction to Computing. Session Two: Computer Hardware Human and Computer Interaction. Objectives. Understand the importance of computer literacy Discuss why a computer is a powerful tool Identify the types of computer users Discuss various computer applications in society.

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comp6005 an introduction to computing

COMP6005 An Introduction to Computing

Session Two: Computer Hardware

Human and Computer Interaction

objectives
Objectives
  • Understand the importance of computer literacy
  • Discuss why a computer is a powerful tool
  • Identify the types of computer users
  • Discuss various computer applications in society
computer literacy
Computer Literacy
  • Having a knowledge and understanding of computers and their uses (Discovering Computers 2005)
  • Issue 1-1, pg 9
computers as powerful tools
Computers As Powerful Tools
  • Reliability
  • Speed
  • Consistency
  • Accuracy
  • Storage
  • communications
slide5
Quiz
  • Get in groups of two and within the given timeframe, see how many questions you get correct from the site below
  • http://www.scsite.org/dc2005/quiz
types of computers
Types of Computers
  • Supercomputers
  • Mainframes
  • Midrange servers
  • Personal computers
    • Desktops
    • Notebooks
  • Mobile computers and devices
supercomputers
Supercomputers
  • Fastest, most powerful computer (processing speed of more than 100 trillion instructions in a second)
  • Most expensive
  • Used for applications requiring complex sophisticated mathematical calculations
    • Applications in aerospace, medicine, automotive design, online banking, weather forecasting, nuclear energy research, petroleum exploration
mainframes
Mainframes
  • Large, expensive, very powerful
  • Can handle hundreds or thousands of connected users simultaneously
  • Stores tremendous amounts of data, instructions, information
  • Used by banks, airlines, insurance companies
  • Also used to act as servers on a network environment
    • Access via terminals, PCs, midrange servers, other mainframes
midrange servers
Midrange Servers
  • Previously referred to as minicomputers
  • Less powerful than mainframe; more powerful than workstation
  • Typically support several hundred (sometimes up to few thousand) connected computers at same time
personal computers pcs
Personal Computers (PCs)
  • Can perform all the input, processing, output and storage by itself
  • One simultaneous user at a time; more if networked
  • Least expensive;
  • Small, can fit on a desk (desktop) or on a lap (laptop)
  • Can be powerful enough to act as a server on a network
workstations
Workstations
  • Expensive, powerful desktop
  • Used for work that requires intense calculation and graphics capabilities
    • Engineering, desktop publishing, graphic art, architecture
discussion
Discussion
  • Mac vs PC
  • Are there two different definitions of a workstation?
categories of users
Categories Of Users
  • Home
  • Small office/home office
  • Mobile
  • Large business
  • Power
applications in society
Education

Finance

Government

Health care

Science

Publishing

Travel

Industry

Applications In Society
  • Looking Ahead 1-2, pg 33
links
Links
  • Reference
    • Discovering Computers 2005 by Shelley, Cashman, Vermaat
  • Of Interest
    • http://www.evolution.com/
    • http://www.xybernaut.com/index.asp