Operating System (full) pptx

 Today, computers are seen as artificial intelligence, if any emotion, the computer must be friends with each of them  Ex: If the people need operating system to control behavior, e

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Operating System

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 Today, computers are seen as artificial

intelligence, if any emotion, the computer must be friends with each of them

 Ex: If the people need operating system

to control behavior, emotions, body, so the computer must have an operating system to manage hardware and software resources on your computer

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Notion

 An operating system is a piece of

software

 Interface between the computer

and the user

 Ex: The first OS was the GM OS

(genaeral motors OS) created in 1955

Kinds of operating systems

 There are two major kinds of operating systems

Command Line Interfaces(CLI)

CLIs use only text and no graphics to display information and user navigates by mean of

the shell

Ex:MS - Dos,Linux

Graphical User Interfaces(GUI)

A program interface that takes advantage of the computer’s graphics capabilities to make the program easier to use

Ex:Windows,[X_Windowns],Macintosh OS

History

 Perhaps the most popular OS up

untill the 1990's was Unix on the mainframe and [Ms-Dos] on the Pc

 All versions of Linux and Mac OS X

can trace their roots to directly back to the original Unix

corporation's predecessor to Windows

MS-DOS and its information

prececessor to Windows

Seattle Computer Products called QDOS

licensed it to IBM

of Microsoft’s GUI OS upto and including Windows XP

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Windows and Unix What is over availability?

 The main OS today on PCs is of course

Microsoft Windows

 Over 90% maket share

 Windows stared out as a home and office

OS.It has become a serious challenger to

unix systems

 Unix is a system of multi-tasking,multi-user

and stability for severs,workstations and

latops.

Unix also has a graphical interface (GUI)

such as microsoft windows

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The components of the operating system

 The base unit of the operating system is

a collection of programs called the kernel(the most basic layer which control the hardware and the file system)

Kernel basic facilities

 Process management

 Memory management

 Device management

 System calls

The components of the operating system

 Other programs which help the kernel interface

with the component and peripherals are called

device drivers.

 Another main task for an operating system is to

control which users have access to specific

parts of a computer’s resources

 Ex: Requre users to authenticate with a

username and password before being permitted

to use the system resources

OS will allow a system administrator to

set permissions on a file or a directory

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Primary function of the operating system

The task of the operating system

 Control and direct management of hardware

 Perform some basic operations in computer Ex: file management system

 Provide a primitive system interface for

applications

 Providing a basic system commands to the

machine operator (system command)

 Provide basic services for software

applications

Ex: Web browser program, text editor

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Sort by some operating systems Một số cách phân loại hệ điều hành

a The type of computer

b Perspective of users and

number of programs used at the same time

c User perspective (Access

resources simultaneously)

d Angle sanctions (góc độ hình

thức xử lý)

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a The type of computer

 The operating system for Mainframe computer

 The operating system for Server computer

 The operating system for Multiple CPU machine

 Operating system for personal computers (PC)

 The operating system for PDAs (Embedded OS -

hệ điều hành nhúng)

 The operating system for specific machine

 Operating system for chip-card (SmartCard)

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b Perspective of users and number of

programs used at the same time

 The operating system of a single user

 Multi-tasking operating system

a user

 Multi-tasking operating system more user

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c User perspective (Access resources

d Angle sanctions (góc độ hình thức xử lý)

 Batch processing system (Hệ thống xử

lý theo lô)

 Batch processing system has chapters

(Hệ thống xử lý theo lô đa chương)

 Time-sharing system

 Parallel Systems (Hệ thống song song)

 Distributed Systems (Phân tán)

 Processing system in real time

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Utilities of Operating System (Tiện ích)

 Modern operating systems also offer

many utilities and conveniences including the ability to easily install and uninstall software application, monitor hardware, upgrade itself though a network connection (update), and more.

 Even basic productivity applications

such as web browsers and text editors are now include as standard on most operating system releases

Basic DOS commands

 FORMAT: initializes a floppy disk and prepares it for use

 CD (or CHDIR): changes your current directory

 DIR: displays a list of the files of a disk or directory

 MD (or MKDIR): creates a subdirectory

 DISKCOPY: copies all files from one floppy disk to another

 BACKUP: saves the contents of the hard disk on floppy disks for security purposes

 REN (or RENAME): changes names of your files

 DEL: erases files and programs from your disk

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Mac os

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Atari T OS

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Symbian OS

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Ubintu Linux

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iPhone OS

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