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Transcript

  • 1. Chapter 3
  • 2. Chapter Module 3A System Software Module 3B Programming Languages System Software and Software Development 3
  • 3. System Software
    • Operating Systems (OS): The Computer’s Traffic Cop
    • Exploring Popular Operating Systems: A Guided Tour
    • System Utilities: Tools for Housekeeping
    Module A
  • 4. Operating Systems The OS is much like a computerized version of a traffic cop, standing at the intersection of the computer’s hardware, application programs, and the user. System Software Module A
    • kernal/supervising program
      • memory resident
  • 5. Operating Systems
    • Managing Programs
      • single-tasking
      • multitasking
      • foreground application
      • background application
      • multiprocessing
    System Software Module A
  • 6. Operating Systems System Software Module A The OS manages programs, parcels out memory, deals with input and output devices, and provides means of interacting with the user
  • 7. Operating Systems
    • Managing Memory
      • partition
      • virtual memory
      • swap file
    • Handling Input and Output
      • device drivers
    System Software Module A
  • 8. User Interface
    • Types of User Interface
      • command-line
      • menu driven
      • graphical user interface (GUIs)
    • User Interface functions
      • gain access (log on)
      • start (launch)
      • manage disks and files
      • shut down safely
    System Software Module A
  • 9. Exploring Popular OS
    • Unix
    • Xerox PARC & the first GUI
    • MS-DOS
    • Mac OS
    • Microsoft Windows 3.x
    Module A System Software
  • 10. Exploring Popular OS
    • Microsoft Windows 95 and 98
    • Microsoft Windows CE
    • Microsoft Windows NT
    • Linux
    Module A System Software For the latest on Linux, visit Linux online
  • 11. System Utilities: Tools for Housekeeping
    • Backup utilities
    • Antivirus software
    • File compression utilities
    • File defragmentation programs
    Module A System Software
  • 12. Antivirus Software System Software Module A Norton AntiVirus is a utility that works by examining all the files on a disk, looking for the tell-tale "signatures" of virus code
  • 13. Programming Languages
    • First Generation : 1s and 0s
    • Second Generation: A little Easier
    • Third Generation: Programming Comes of Age
    • Fourth Generation: Getting away from Procedure
    • Object Oriented: A Revolution in the Making?
    • A Guide to Programming Languages: One Size doesn’t Fit All
    Module B
  • 14. Programming Languages
    • First Generation
      • machine language: 1s and 0s
      • machine dependent
    • Second Generation
      • assembly language
      • low-level
      • mnemonics
    Programming Languages Module B
  • 15. Third-Generation Languages (3GL)
    • Description
      • Procedural
      • high-level
    • Compilers
      • source code/object code
      • low-level
    • Interpreters
    Programming Languages Module B
  • 16. Third-Generation Languages (3GL)
    • Spaghetti Code
      • software crisis
    • Structure Programming
      • Pascal/Algol
      • low-level
    • Modular Programming
    Programming Languages Module B
  • 17. Fourth-Generation Languages (4GL)
    • report generators
    • query languages
      • Structured Query Language (SQL)
    • natural language
    Programming Languages Module B
  • 18. Object-Oriented Programming: A revolution in the making
    • Eliminating the program vs data distinction
    • What is an object?
    • Classes
    • Inheritance
    • Rapid Application Development (RAD)
    • Middleware
    Programming Languages Module B
  • 19. A Guide to Programming Languages
    • COBOL
      • business programming
      • Y2K
    • Fortran
      • scientific/mathematical/engineering
      • good for complex problems
    Programming Languages Module B Learn more about COBOL by reading the FAQ located on the Oxford University Library Automation Service
  • 20. Structured & Modular Languages
    • Ada
    • Visual Basic
      • event-driven
      • Vbscript
      • ActiveX controls
    • Pascal
    Programming Languages Module B
  • 21. Object Oriented Languages
    • Smalltalk
    • C and C++
    Programming Languages Module B A simple C++ program that prints Hello World to the screen If you’re thinking about a career in computer science, C++ is the language to learn. For more information see the C++ Virtual Library and C++ FAQ Lite # include <iostream.h> void main () { cout <<“Hello World!”;
  • 22. Object Oriented Languages
    • Java
    • JavaScript
    Programming Languages Module B Simple Java code To learn more about Java, visit Java’s home page at Sun Microsystems class Hello World { public static void main (String args { } ) { System.out.println (“Hello World!”) }

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