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Computer Systems

Computer Systems. What is a computer? What are the components of a computer? Input Devices System Unit Storage Devices Communications Devices Peripheral Devices. Computer Systems 2. Input - Obtain information Processing - Process information Output - Distribute information

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Computer Systems

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  1. Computer Systems • What is a computer? • What are the components of a computer? • Input Devices • System Unit • Storage Devices • Communications Devices • Peripheral Devices

  2. Computer Systems 2 • Input - Obtain information • Processing - Process information • Output - Distribute information • Storage - Store information for future use

  3. Why is a Computer Powerful ? • Speed • Reliability • Accuracy • Storage • Communications • Connectivity

  4. Categories of Computers • Personal Computers • Hand-held - specific purpose • Palmtop - limited capabilities • Pen - PDA • Notebook - general purpose • Subnotebook - smaller < 4 lb. • Laptop - 6 - 10 lb.

  5. Categories of Computers (2) • Personal Computers (con’t) • Desktop - separate keyboards, screens, drives • Tower - Upright case • Workstations - powerful PC (networked?) • Network - not stand-alone

  6. Categories of Computers (3) • Servers • Powerful CPU • Multiple CPUs for processing • Large memory • Large disk storage • High-speed internal communications • High-speed external communications

  7. Categories of Computers (4) • Minicomputers - multiple users • Mainframe - support hundreds of users • Supercomputers - fast processing

  8. Computer Software • System Software - Operating instructions • User Interface - GUI, TUI • Applications - Production instructions

  9. Elements of an Information System • Software • Hardware • Data • Users • Procedures • Information

  10. How are Computers Used? • Reception • Sales • Marketing • Shipping and Receiving • Manufacturing • Information Systems • Finance

  11. Review - InCyber Pages • Information Literacy • URL - http://www.scsite.com/dc/ch1/review.htm • Terms • Hot Topics • CyberClass

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