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COMP6005 An Introduction to Computing

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

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  1. COMP6005 An Introduction to Computing Session Two: Computer Hardware Human and Computer Interaction

  2. 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

  3. Computer Literacy • Having a knowledge and understanding of computers and their uses (Discovering Computers 2005) • Issue 1-1, pg 9

  4. Computers As Powerful Tools • Reliability • Speed • Consistency • Accuracy • Storage • communications

  5. 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

  6. Types of Computers • Supercomputers • Mainframes • Midrange servers • Personal computers • Desktops • Notebooks • Mobile computers and devices

  7. 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

  8. 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

  9. 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

  10. 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

  11. Workstations • Expensive, powerful desktop • Used for work that requires intense calculation and graphics capabilities • Engineering, desktop publishing, graphic art, architecture

  12. Discussion • Mac vs PC • Are there two different definitions of a workstation?

  13. Categories Of Users • Home • Small office/home office • Mobile • Large business • Power

  14. Education Finance Government Health care Science Publishing Travel Industry Applications In Society • Looking Ahead 1-2, pg 33

  15. Links • Reference • Discovering Computers 2005 by Shelley, Cashman, Vermaat • Of Interest • http://www.evolution.com/ • http://www.xybernaut.com/index.asp

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