Download 2.0 Basic OS Concept Management Types of Interfaces

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
 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
Types of Interface :
1) Command Interface…cont
Types of Interface :
2) Menu Interface
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
Types of Interface :
2) Menu Interface…cont
Types of Interface :
3) Graphical User Interface
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
Types of Interface :
3) Graphical User Interface…cont
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.
Types of Interface :
5) Web-form Interface
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
Types of Interface :
5) Web-form Interface…cont
Basic Functions Perform by
OS User Interface
1.
Enable user to interact with the system
2. How to interact? By perform the user command
interface /instructions from various types of
interfaces.
3. Medium are used ; display screen, keyboard,
mouse, light pen, the appearance of a desktop,
illuminated characters or help messages.
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
Type of Boot Process
1.
Cold Boot
2. Warm Boot
Type of Boot Process : Cold Boot

When turning on a computer that has been
powered off completely.

Example : by press power button.
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
How a PC Boots Up
1.
The power supply send a signal to the component s in
the system unit
2.
The processor finds the ROM chip(s) that contain the
BIOS (basic input output system)
3.
The BIOS performs the POST(power-on self test),
which checks components such as mouse, keyboard
and adapter cards.
4.
The results of the POST are compared with data in a
CMOS chip
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.