4. OPERATING SYSTEM DONE BY DINESH.A - PowerPoint Presentation

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4. OPERATING SYSTEM

DONE BY DINESH.A

www.Padasalai.NetSlide2

TYPES OF SOFTWARESystem Sofware (Predefined)Application Software (Extra Application)

Eg : Ms.off, Photoshop,etc.,Slide3
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INTRODUCTION TO OSOS – Operating systemIt is an mediator (Interface) User and sytem.Slide5

Popular OS

System OSWINDOWS2) LINUX3)UNIX

MOBILE OS

1)ANDROID

2) IOSSlide6

Need for operating System Ensure & Extract Esy InteractionBootingControlling Input/Output

DevicesMange the Utilization of Main MemorySecuritySlide7

Types of OSSingle User

Only a single User to perform a task at a time.Multi User

To Accessed by a Multiple Users at a time.Slide8

Key Features of OS.User InterfaceFile Management Memory ManagementFault ManagementProcess ManagementSecurity ManagementSlide9

1) USER INTERFACE

GUI

Graphical User Interface.

LINUX

Available GUI Based Distribution.Slide10

2)MEMORY MANAGEMENTOs Response ForPortion of MemoryData Move

Allocation of Memory

Process of controlling & coordinating computer Main MemorySlide11

3) Process ManagementCommunicate & SynchronizeUnit of work (Program) in a Computer

Collection Process

OS – Executed by System Code

User process by User codeSlide12

Algorithms of the ProcessFIFO (First In First Out)SJF (Shortest Job First)ROUND ROBINBASED ON PRIORITYSlide13

1) FIFO (First In First Out)Queuing TechniqueSlide14

2) SJF (Shortest Job First)Based on the size of the JobSlide15

3) Round Robin (RRS)Time sharing systemJobs are assigned and processor time in a circular methodSlide16

4) Based on priorityThe given job (Process) is assigned based on a priorityHigher priority is more Important then other JobsSlide17

4) Security ManagementMajor challenge in Software industryTo Product User’s legitimate data from hackers.Three Level of securities

Fill Access LevelSystem LevelNetwork LevelSlide18

5) Fault ToleranceOS should be “Robust”FaultCrash

Fault Tolerance CapabilitiesSlide19

6) File ManagementImportant FunctionOS Manages the files, folders and directory systems on a computerFATFile Allocation TableNTFSNext

Generation File SystemSlide20

7) MultiprocessParallelTwo are more processors at a some time to be Executed.Slide21

8) Time-SharingTo Execute Multiple tasks (or) Processes concurrentlyEach task a fixed time AllocationSlide22

9) Distributes OSStored and processed on Multiple physical locations Access through the Internet.Advantages:Data Sharing

MultiprocessImproves the InteractionReduces the LoadingSlide23

Prominent OSUNIXMicrosoft WindowsLINUXIOSAndroidSlide24

Various Operating System WindowsLINUX

Red HatMac OSFree BSDSolariesSun CobaltSlide25

1) UNIXMultitasking OS1970Ken thompson & Dennis Ritchie.Slide26

2) LINUXOpen source OSEasy to customizeVarious versions and Updates.Slide27
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LINUXFEDERAUBUNTUBOSSLINUX MINTRED HAT.Slide29

3) MICROSOFT WINDOWSDeveloped Microsoft coporation (Intel&AMD)Slide30

Os for Mobiles DevicesApple iosGoogle AndroidSlide31

1) Android OS

Developed by GoogleTouch Mobile, Smart phone, Tablet, Smart Tv, etc.Slide32

VersionsAAlphaBBeta

LLollipopO OreoK KitKat

NMougatSlide33

2)ios (iphone OS)Developed by AppleIphone Mobile

devices,ipad touch2nd most popular OS.Slide34

Windows Version1985Windows 1.01990 Windows 3.2

1995 Windows 951998 Windows 982001 Windows XP2006 Windows Vista2009 Windows 7

2012 Windows 82015

Windows 10Slide35

Thank You

Done by

Dinesh.A

Moblie

No.9025226740

Elthampuravadai

(

Vill

)

Kilpennathur

post

Thiruvannamalai

Dt.Slide36

We Growth our

Technology