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CHAPTER - PowerPoint PPT Presentation


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3. CHAPTER. System Software. Objectives . System software Programs, Functions, Categories Utilities Device drivers Language translators. Systems Software. Behind the scenes activities Designed to handle Technical details Where programs stored How commands executed Where files saved

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CHAPTER

System Software

objectives
Objectives
  • System software
  • Programs, Functions, Categories
  • Utilities
  • Device drivers
  • Language translators

© The McGraw-Hill Companies, Inc. 2002

systems software
Systems Software
  • Behind the scenes activities
  • Designed to handle
    • Technical details
    • Where programs stored
    • How commands executed
    • Where files saved
    • How output handled

© The McGraw-Hill Companies, Inc. 2002

four kinds of programs
Four Kinds of Programs
  • Operating system
  • Utilities
  • Device drivers
  • Language translators

© The McGraw-Hill Companies, Inc. 2002

operating systems
OperatingSystems
  • Coordinates resources
  • Provides user interface
  • Run applications

© The McGraw-Hill Companies, Inc. 2002

categories of os
Categories of OS
  • Hundreds of operating systems
  • Three basic categories
    • Embedded – hand-held
    • Network OS – linked computers
    • Stand-alone OS – desktop

© The McGraw-Hill Companies, Inc. 2002

major os
Major OS
  • Windows – 80% of market
  • Mac OS – powerful and easy to use
  • UNIX – network; originally designed for Web
  • LINUX – non proprietary; free off Web

© The McGraw-Hill Companies, Inc. 2002

utilities
Utilities
  • Hard disk crashes
  • Antivirus programs
  • Computer freeze-ups
  • Decrease operation slow-downs

© The McGraw-Hill Companies, Inc. 2002

essential utilities
Essential Utilities
  • Troubleshooting
  • Antivirus
  • Uninstall
  • Backup
  • File compression

© The McGraw-Hill Companies, Inc. 2002

utility suites
Utility Suites
  • Norton
  • McAfee
  • DataFellows

© The McGraw-Hill Companies, Inc. 2002

device drivers
Device drivers
  • Specialized programs
  • Loaded into memory each time
  • Add new device: install device driver

© The McGraw-Hill Companies, Inc. 2002

language translators

Language translators

programming language into computer language

a look to the future
A Look to the Future
  • IBM concentrating research efforts on eLiza:
    • Handle time-consuming maintenance
    • Create complex infrastructure
  • Self-maintaining servers
    • Able to care for themselves

© The McGraw-Hill Companies, Inc. 2002