1 / 65

Chapter 8 System software Part 1 Operating Systems

Chapter 8 System software Part 1 Operating Systems. Ch 4 Processor. Control Unit. Arithmetic Logic Unit (ALU). Instructions Data Information. Instructions Data Information. Ch 1 – Introduction Ch 2 – Internet & WWW Ch 3 – Application Software Ch 8 – System Software. Control Unit.

tegan
Download Presentation

Chapter 8 System software Part 1 Operating Systems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 8 System softwarePart 1 Operating Systems

  2. Ch 4 Processor Control Unit Arithmetic Logic Unit (ALU) InstructionsDataInformation InstructionsDataInformation Ch 1 – Introduction Ch 2 – Internet & WWW Ch 3 – Application Software Ch 8 – System Software Control Unit Arithmetic Logic Unit (ALU) Memory InputDevices Ch 5 OutputDevices Ch 6 Information Data StorageDevices Ch 7

  3. What are hardware and software? Hardware Electronic and mechanical equipment Software Instructions that tell hardware what tasks to do, control and assist the execution of tasks

  4. What is software ( SW )? Programs that control and assist the operations of the computer – System Software Programs that perform specific tasks for users – Application Software

  5. What is system software? Programs that control the operations of the computer and its devices Operating System (OS) Utility Programs

  6. Application Software To serve as productivitybusiness tool To assist with graphics and multimedia projects To support personal business, education To facilitate communications

  7. Operating system (OS) (sometimes called the platform) coordinates all activities among computer hardware resources • What is OS?

  8. Operating Systemcoordinates all the activities

  9. start (boot) the computer provide a user interface manage programs administer security manage memory controla network establish an Internet connection configure devices schedule jobs provide file management • What are the functions of an operating system? Internet connections

  10. Starting a computer • What is booting? • Bringing in the kernel of OS • Learning about resources • Checking the resources • Displaying the desktop

  11. Three shut down options

  12. What is a user interface? • Controls how you enter data and instructions and how information displays on screen • Provides tools and means to tell the computer what to do and for the computer to tell you what is going on.

  13. What is the command-line user interface?

  14. What is a graphical user interface (GUI)? • User interacts with menus and visual images such as buttons and other graphical objects

  15. Automatic updateautomatically provides updates to the program

  16. A job is an operation having an input, an output, and a meaningful function • How does an operating system schedule jobs? Jobs have to be scheduled for execution To be scheduled they have to be assigned by OS all required by them resources

  17. How does OS manages programs? Expects programs to cooperate – Cooperative OS Gives each program a slice of time – Preemptive by quantum Gives programs time according to their priorities – Preemptive by priorities

  18. Optimizing use of random access memory (RAM) • With virtual memory (VM), portion of hard disk is allocated to function as RAM • What is memory management?

  19. Sending print jobs to buffer instead of directly to printer • What is spooling?

  20. How do you establish an Internet connection? • Operating system includes Connect to a network wizard, that guides the user through setting up connection between computer and Internet service provider

  21. A performance monitoris a program that assesses and reports information about various computer resources and devices

  22. What are the functions of an operating system? start the computer: booting, BIOS, kernel, resources detection & test provide a user interface: command-line, GUI schedule jobs: waiting, ready, running manage programs: cooperative, preemptive, quantum, priorities manage memory configure devices: device drivers organize file system connect to the Internet control a network administer security

  23. Ch 8System softwareOperating Systems - continued

  24. Embedded Network Stand-alone • Categories of operating systems? The machine Group of computers, the computer and the user The computer and the user

  25. Stand-alone operating systems

  26. Windows 7 is Microsoft’s fastest, most efficient operating system to date and is available in multiple editions:

  27. Windows 7 provides programs such as:

  28. Windows Version Year Released Windows 3.x 1990 Windows 95 1995 Windows 98 1998 Windows Millennium 2000 Windows XP 2001 Windows Vista 2006 Windows 7 2009 • Windows versions

  29. The Macintosh operating systemhas set the standard for operating system ease of use • Latest version is Mac OS X

  30. What is Mac OS X? • Available only for computers manufactured by Apple • Integration of SW and HW • Macintosh operating system has been model for most GUIs

  31. What is UNIX? • Used by power users because of its flexibility and power

  32. What is Linux? • Popular, free, multitasking UNIX-type operating system • Open-source softwareeCode is available to public

  33. Network Operating Systems • Allows users to share resources on a network

  34. Some operating systems are designed to work with a server on a network • A server operating systemorganizes and coordinates how multiple users access and share resources on a network • A network administrator uses the server operating system to: • Add and remove users, computers, and other devices • Install software and administer network security

  35. An embedded operating system are for mobile devices or consumer electronic device

  36. Ch 8System softwareUtility Programs What is a utility program? System software that performs maintenance-type tasks

  37. System software provides users with the capability of:

  38. What is a file manager? Windows Explorer • Performs functions related to file management

  39. A file manageris a utility that performs functions related to file management • Displaying a list of files • Organizing files in folders • Copying, renaming, deleting, moving, and sorting files and folders • Creating shortcuts

  40. A personal firewall detects and protects a personal computer from unauthorized intrusions

  41. What is an uninstaller? Removes a program and all associated files For Windows Vista it is in the Control Panel

  42. What is a disk scanner? • Searches for and removes unnecessary files

  43. A disk cleanup utility searches for and removes unnecessary files • Downloaded programfiles • Temporary Internetfiles • Deleted files • Unused programfiles

  44. What is a disk defragmenter? • Reorganizes files and unused space on hard disk so programs run faster

  45. What is a diagnostic utility? • Compiles technical information about hardware and software • Prepares report outlining problems

  46. Performance monitorassesses and reports about system resources and devices

More Related