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2.2 Types of Computer Software

2.2 Types of Computer Software. Prepared by Desmond C.S. Wong. Operating System. An OS is a program (some may say a set of programs) that coordinates all the activities of a computer. Microsoft Windows XP. from Amazon.com. Apple Mac OS X. from Apple Computer. Redhat Linux.

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2.2 Types of Computer Software

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  1. 2.2 Types of Computer Software Prepared by Desmond C.S. Wong

  2. Operating System • An OS is a program (some may say a set of programs) that coordinates all the activities of a computer

  3. Microsoft Windows XP from Amazon.com

  4. Apple Mac OS X from Apple Computer

  5. Redhat Linux from computerworld.jp

  6. Linux command-mode from rr.sans.org

  7. Sun Solaris Unix from xfce.org

  8. Microsoft DOS from members.tripod.com/suzuki2go

  9. Microsoft Windows DOS Prompt

  10. POWER Starting a computer 1. Turn on the power

  11. from dualprocessorcomputers.com from rojakpot.com 2. The processor finds the ROM chip that contains the BIOS

  12. from dn.redwoods.cc.ca.us 3. The BIOS performs POST

  13. from wown.info

  14. = ? from nuwaveinc.com 4. The results of the POST are compared with data in the CMOS chip

  15. from all-about-pc.de 5. The BIOS looks for the system files in one of the booting drives

  16. 1001 1010 1011 1100 1101 … from macaddit.com from Amazon.com 6. the system files and the #kernel of the OS load into RAM from hard disk/booting drive

  17. 7. the OS loads configuration information and displays the interface on the screen

  18. User interface Job scheduling Program management Single user/single tasking Multitasking Multi-user Multiprocessing Data management Device management Security of access Resources management Error detection and response Functions of OS

  19. Types of OS • Standalone • MS-DOS, Windows 9X, Windows NT Workstation, Windows 2000 Prof, Windows ME, Windows XP Home & Prof. Ed., MacOS • Network • Netware, Windows NT and 2000 Server, Windows .NET Server, UNIX, Linux • Embedded • Windows CE, Pocket PC 2002, Palm OS

  20. Utility programs • A utility program is a type of system software that performs a specific task, usually related to managing a computer, its devices, or its programs

  21. Applications software • Application software consists of programs that perform specific tasks for users • Word processing • Spreadsheet software • Database software • Presentation graphics software • Game • Desktop publishing software • Anti-virus scanner • Web browser • and etc.

  22. Forms of applications software • Packaged software • Custom software • Freeware • Public domain software • Shareware • Software from ASP

  23. Text document txt, rtf, doc, pdf Image files bmp, gif, jpeg, png, tiff Sound files midi, mp3, ra, wav Video files avi, mov, mpeg, rm Presentation files ppt Spreadsheet files xls Database files dbf, mdb Data files

  24. User Application Software Data Files Operating System Relationship among OS, applications s/w and data files

  25. http://www.med.yale.edu/caim/manual/graphics/graphics/8bit_displays.gifhttp://www.med.yale.edu/caim/manual/graphics/graphics/8bit_displays.gif http://www.med.yale.edu/caim/manual/graphics/graphics/1_bit_display.gif

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