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2
3
NO ALIEN LANGUAGE
4
OPERATING SYSTEM WARSBy
Flt Lt Kashif Shamaun
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AIM
What all is happening in Operating System arena?
Do we have choice other than what we have?
What is good for us? Would adaptation to new technology be
possible?
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SEQUENCE
Part I Understanding Operating System
Part II Brief history
Part III Comparison of operating systems
Conclusion Questions
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Part I
UNDERSTANDING OPERATING SYSTEMS
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WHAT IS OPERATING SYSTEM Set of programs containing instructions
that work together to coordinate all the activities among computer hardware resources.
The interface between the user and the computer hardware.
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COMPUTER HIERARCHY
User Application
Operating system
Hardware
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OPERATIONAL INTERACTION
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OS Functions
Start &
Shut Down
Network
UpdatesUser Interface
SecurityProgramsMemoryFile ManagementInternet
Devices
Performance
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HARDWARE USING OS
Main Frames
Servers
Microprocessors
Embedded Systems
Personal Computers
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TYPES OF OS
Real-time operating system (RTOS) Single-user, single-tasking Single-user, multi-tasking Multi-user, multi-tasking
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MAJOR PLAYERS
Operating System
Windows Mac Linux
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Part II
BRIEF HISTORY
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TIMELINE
1991 1992 1993 1994 1995
Windows NTLinux
Windows 95
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TIMELINE
1996 1997 1998 1999 2000
Mac OS 7.6
Windows 98
Windows 2000
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Mac OS 10.4
TIMELINE
2001 2002 2003 2004 2005
Mac OS 10
Windows XP
Windows XPSP I
Mac OS 10.3
Ubuntu
Windows XP
SP II
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TIMELINE
2006 2007 2008 2009 2010
Mac OS 10.5
KubuntuWindows Vista
Windows server 2008
Windows 7
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WINDOWS
Proprietary operating system Varity of platforms Significant Marketing research Windows XP Windows 7 a new promise
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MAC
Partially proprietary Stunning Graphical User Interface (GUI) Linux based architecture Server edition
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LINUX
C language based Unix like operating system Major share in servers The main flavors
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Part III
SALIENT FEATURES COMPARISON
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VIRUSES
Operating System
Number of Viruses
Windows 60,000Mac 70Linux 40
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LINES OF CODE
Operating System
Lines of Code
Windows 89 millionMac 50 MillionLinux 40 Million
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WINDOWS ADVANTAGE
Windows
Easy to use
Update
Supporting
Gaming
Familiar
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WINDOWS DISADVANTAGES
Windows
expensive
Not secure
Not stable
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MAC ADVANTAGES
Mac
Great GUI
Better to graphic
designerSecure
Stable
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MAC DISADVANTAGES
Mac
Not gaming
Not all software
run
Difficult mouse
(one click)
Platform dependant
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LINUX ADVANTAGES
Linux
Free
Stable
Secure
Source Code
Low pc requireme
nt
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LINUX DISADVANTAGES
LinuxNot all
software run
Not support
Hard to learn, use and install
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MARKET SHARE
Windows XP65%
Windows Vista 23%
Win-dows 7
4%
Win-dows 2000 1%
Mac 5% Linux
1%
Sun Solaris 1% Other
1%
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WHAT TO CHOOSE
Cyber warfare secure (to some extent) Viruses Drivers Free Software GUI Backward Compatible Better & free support Over heads Power saver Ethically secure
34 CONCLUSION
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WORD OF THOUGHT
“You can delay the technology but can not avoid it”
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