Operating systems by faixan
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Transcript of Operating systems by faixan
Outlines
• Operating System
• Types of Operating System
• Device Dependent Program
• Device Independent Program
• Network Operating System/ Server Operating System
What is Operating System (OS)?
• An operating system (OS) is a set of programs containing instructions that work together to coordinate all the activities among computer hardware resources.
Types of Operating Systems
• There are basically two Types:
1. Device Dependent Program
2. Device Independent Program
Device Dependent Program
• A device-dependent program is one that runs only on a specific type of computer.
• Proprietary Software is privately owned and limited to a specific vendor or computer model.
• Limitations of a software (such as most Linux, Mac, and Windows programs) that prevent it from running on more than one platform, or which requires a specific hardware to perform its functions.
• A device-dependent software cannot easily be moved from one type of computer to another, and usually requires large-scale modifications or rewriting of the original program.
Device Independent Programs
• Device-independent programs are those programs that runs on computers provided by variety of manufacturers.
• The trend today is towards device-independent programs.
• The big advantage of device-independent operating systems is you can retain existing application software and data files even if you change computer models or vendors.
Categories of Operating System
• The three basic categories that exist today are:
1. Stand-alone Operating Systems
2. Network Operating System (NOS)/ Server Operating Systems
3. Embedded Operating Systems
Stand-alone Operating Systems
• A stand-alone operating system is a completeoperating system that works on adesktop computer, notebook computer, ormobile computing device.
• Some are client operating systems that work in conjunction with a server operating system, with or without a network.
• Examples of Stand-alone Operating systems are Windows Vista, Mac OS X, UNIX and Linux.
Network Operating System
• A network operating system/ server operating system is an OS that is designed specifically to support a network, and typically resides on a server.
• Network operating systems are designed specifically to support all sizes of networks, including medium to large-sized businesses and Web servers.
• Examples of Server Operating System are Windows Server 2012 R2, Solaris and Novell NetWare.
Embedded Operating Systems
• The operating system on mobile devices and many consumer electronics, called an embedded operating system.
• Examples of embedded operating system are Windows Embedded CE, Windows Mobile, Palm OS, iPhone OS, BlackBerry OS, Google Android and Symbian OS.
Conclusion
• First of all we discussed about operating system and then the types of operating system, device dependent programs and device independent programs.
• Then the basic categories of OS like stand-alone operating system, network operating system/ server operating system and embedded operating system.