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2.0 Basic OS Concept Management

2.0 Basic OS Concept Management. Types of Interfaces. 1. Command Interface 2. Menu Interface 3. Graphical User Interface 4. Voice-actuated interface 5. Web-form interface. Types of Interface : 1) Command Interface. Types of Interface : 1) Command Interface …cont.

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2.0 Basic OS Concept Management

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  1. 2.0 Basic OS Concept Management

  2. Types of Interfaces 1. Command Interface 2. Menu Interface 3. Graphical User Interface 4. Voice-actuated interface 5. Web-form interface

  3. Types of Interface : 1) Command Interface

  4. Types of Interface : 1) Command Interface …cont An interface that accepts types commands, one line at a time from the user Contras with a menu – driven interface E.g.: MS-DOS , UNIX operating system

  5. Types of Interface : 1) Command Interface…cont

  6. Types of Interface : 2) Menu Interface

  7. Types of Interface : 2) Menu Interface…cont An interface that accept instructions that user choose from menu of valid choice User often use mouse to point & click on the chosen instruction Contrast with a command-driven interface E.g.: Windows 2000

  8. Types of Interface : 2) Menu Interface…cont

  9. Types of Interface : 3) Graphical User Interface

  10. Types of Interface : 3) Graphical User Interface…cont A user interface that allows the user to activate OS command by clicking on a desktop icon using pointing device such as mouse or touch screen. GUIs evolved from command –driven user interface. User often use mouse to point & click on the chosen

  11. Types of Interface : 3) Graphical User Interface…cont

  12. Types of Interface : 4) Voice-Actuated Interface Enables a user to use simple voice command to control physical environmental. E.g.: The computer includes a voice card & associated voice recognition & training software for interpreting & translating voice input into digital information readable by controller card for operating equipments @ control the environment.

  13. Types of Interface : 5) Web-form Interface

  14. Types of Interface : 5) Web-form Interface…cont Allow user to enter data that is send to a server for processing Web form interface resembles paper form because user need to fill out the form using web form elements

  15. Types of Interface : 5) Web-form Interface…cont

  16. Basic Functions Perform by OS User Interface Enable user to interact with the system How to interact? By perform the user command interface /instructions from various types of interfaces. Medium are used ; display screen, keyboard, mouse, light pen, the appearance of a desktop, illuminated characters or help messages.

  17. Boot Process Booting up is a bootstrapping process that starts OS when the user turns on a computer system Booting is the process of starting or restarting a computer

  18. Type of Boot Process Cold Boot Warm Boot

  19. Type of Boot Process : Cold Boot When turning on a computer that has been powered off completely. Example : by press power button.

  20. Type of Boot Process : Warm Boot • Is the process of restarting a computer that already is powered on. • Example : In Windows XP, warm boot can be perform by : • pressing combination of (CTRL + ALT +DEL) • selecting a button or an option from a list in a dialog box • pressing the reset button on the computer

  21. How a PC Boots Up The power supply send a signal to the component s in the system unit The processor finds the ROM chip(s) that contain the BIOS (basic input output system) The BIOS performs the POST(power-on self test), which checks components such as mouse, keyboard and adapter cards. The results of the POST are compared with data in a CMOS chip

  22. 5. The BIOS looks for the system file in drive A (floppy disk drive), sometimes a CD or DVD drive & then drive C (hard disk) 6. The system file and the kernel of the OS load into memory (RAM) from storage (hard disk) 7. The OS loads configuration information, may request user information & display the desktop on the screen.

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