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1. Dictionary

   Op·er·at·ing sys·tem

   /ˈäpərātiNG ˌsistəm/

   

   noun

   • 1. the software that supports a computer's basic functions, such as scheduling tasks, executing applications, and controlling peripherals.

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2. Top results related to operating system definition

   • Operating System - Difference Between Distributed System and Parallel System

     A distributed system is a model where distributed applications are running on multiple computers linked by a communications network. Sometimes it is also called loosely coupled systems because in which each processor has its own local memory and processing units. LOCUS and MICROS are some examples of distributed operating systems.

     Parallel Systems are designed to speed up the execution of programs by dividing the programs into multiple fragments and processing these fragments at the same time. Flynn has classified computer systems into four types based on parallelism in the instructions and in the data streams. 

     • Single Instruction stream, single data stream
     • Single Instruction stream, multiple data stream
     • Multiple Instruction stream, single data stream
     • Multiple Instruction stream, multiple data stream

     Advantages of Distributed Systems:

     • Scalability: Distributed systems can be easily scaled by adding more computers to the network.

     Check all answers on Geeksforgeeks

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   • Operating System - Difference Between Distributed System and Parallel System

     A distributed system is a model where distributed applications are running on multiple computers linked by a communications network. Sometimes it is also called loosely coupled systems because in which each processor has its own local memory and processing units. LOCUS and MICROS are some examples of distributed operating systems.

     Parallel Systems are designed to speed up the execution of programs by dividing the programs into multiple fragments and processing these fragments at the same time. Flynn has classified computer systems into four types based on parallelism in the instructions and in the data streams. 

     • Single Instruction stream, single data stream
     • Single Instruction stream, multiple data stream
     • Multiple Instruction stream, single data stream
     • Multiple Instruction stream, multiple data stream

     Advantages of Distributed Systems:

     • Scalability: Distributed systems can be easily scaled by adding more computers to the network.

     Check all answers on Geeksforgeeks

     2/5

   • Operating system file system block size?

     Top Answer

     Answered Nov 21, 2013 · 1 votes

     You can't have a big amount of different block sizes, that would be hell to implement and manage. I also think that some hardware limitations restrain what sizes you can use.

     Now the thing is, unless the amount of data you wish to store fits exactly in all the blocks you are using, then some space is going to be wasted in the last block.

     For example, if your block is one gygabyte long (hypothetically speaking), and you want to store a 1 or 2 bytes long file, you've just wasted nearly a gigabyte of disk space. All information is stored as blocks. You can't store half a block.

     Long blocks make for better performance, though, since the disk may spend more time fetching information from a block before proceeding to the next one. Also it's less blocks to track and manage.

     Linux is a fun operating system to play with because it can work with so many different file systems (as far as I remember you only get some variations of FAT and NTFS with Windows). You could read more about file system on this link:

     Linux System Administrators Guide: Chapter 5. Using Disks and Other Storage Media

     See section 5.10.5 for more info on advantages and disadvantages of small and big block sizes.

     So back to your question: having different block sizes like that allows you to optimize storage. You can minimize wasted space by switching to smaller blocks by the end of the file, while having as few blocks as possible to reduce I/O times.

     Check all answers on Stack Overflow

     3/5

   • System Programs in Operating System

     System Programming can be defined as the act of building Systems Software using System Programming Languages. According to Computer Hierarchy, Hardware comes first then is Operating System, System Programs, and finally Application Programs. Program Development and Execution can be done conveniently in System Programs. Some of the System Programs are simply user interfaces, others are complex. It traditionally sits between the user interface and system calls.  In the context of an operating system, system programs are nothing but a special software which give us facility to manage and control the computer’s hardware and resources. As we have mentioned earlier these programs are more closely with the operating system so it executes the operation fast and helpful in performing essential opeartion which can’t...

     • File Management &#x2013 A file is a collection of specific information stored in the memory of a computer system. File management is defined as the process of manipulating files in the computer system, its management includes the process of creating, modifying and deleting files.
     • Command Line Interface(CLI’s) : CLIs is the essential tool for user . It provide user facility to write commands directly to the system for performing any operation . It is a text-based way to interact with operating system. CLIs can perform many tasks like file manipulation,system configuration and etc.
     • Device drivers :Device drivers work as a simple translator for OS and devices . Basically it act as an intermediatry between the OS and devices and provide facility to both OS and devices to understand each other’s language so that they can work together efficiently without interrupt.
     • Status Information &#x2013 Information like date, time amount of available memory, or disk space is asked by some users. Others providing detailed performance, logging, and debugging information which is more complex. All this information is formatted and displayed on output devices or printed. Terminal or other output devices or files or a window of GUI is used for showing the output of programs.
     • File Modification &#x2013 This is used for modifying the content of files. Files stored on disks or other storage devices, we use different types of editors. For searching contents of files or perform transformations of files we use special commands.
     • Programming-Language support &#x2013 For common programming languages, we use Compilers, Assemblers, Debuggers, and interpreters which are already provided to users. It provides all support to users. We can run any programming language. All important languages are provided.
     • Program Loading and Execution &#x2013 When the program is ready after Assembling and compilation, it must be loaded into memory for execution. A loader is part of an operating system that is responsible for loading programs and libraries. It is one of the essential stages for starting a program. Loaders, relocatable loaders, linkage editors, and Overlay loaders are provided by the system.
     • Communications &#x2013al connections among processes, users, and computer systems are provided by programs. Users can send messages to another user on their screen, User can send e-mail, browsing on web pages, remote login, the transformation of files from one user to another.

     Check all answers on Geeksforgeeks

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3. People also ask

   What is an operating system (OS)?

   • An operating system ( OS) is system software that manages computer hardware and software resources, and provides common services for computer programs .

   Operating system - Wikipedia

   en.wikipedia.org/wiki/Operating_system

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   What is the function of operating system?

   • The operating system provides an interface between an application program and the computer hardware, so that an application program can interact with the hardware only by obeying rules and procedures programmed into the operating system. The operating system is also a set of services which simplify development and execution of application programs.

   Operating system - Wikipedia

   en.wikipedia.org/wiki/Operating_system

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   What are the components of an operating system?

   • The components of an operating system all exist in order to make the different parts of a computer work together. All user software needs to go through the operating system in order to use any of the hardware, whether it be as simple as a mouse or keyboard or as complex as an Internet component.

   Operating system - Wikipedia

   en.wikipedia.org/wiki/Operating_system

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   What are the different types of operating systems?

   • The most popular operating systems for desktop and laptop computers are Windows, macOS, and Linux. These operating systems provide a graphical user interface, including a desktop environment that allows you to manage files and folders. You can also install and run applications from third-party developers.

   Operating System Definition - What is an operating system? - TechTerm…

   techterms.com/definition/operating_system

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4. en.wikipedia.org › wiki › Operating_systemOperating system - Wikipedia

   en.wikipedia.org › wiki › Operating_system

   • Cached

   Definition and purpose. An operating system is difficult to define, but has been called "the layer of software that manages a computer's resources for its users and their applications". Operating systems include the software that is always running, called a kernel—but can include other software as well.

   • List of Operating Systems

     This is a list of operating systems.Computer operating...

   • Talk

     The user below has a request that an edit be made to...

5. www.techtarget.com › whatis › definitionWhat is an Operating System (OS)? Definition, Types and Examples

   www.techtarget.com › whatis › definition

   An operating system (OS) is the program that, after being initially loaded into the computer by a boot program, manages all of the other application programs in a computer. The application programs make use of the operating system by making requests for services through a defined application program interface ( API ).

   • Author: Stephen J. Bigelow

   • Video Duration: 2 min

6. www.geeksforgeeks.org › what-is-an-operating-systemWhat is an Operating System? - GeeksforGeeks

   www.geeksforgeeks.org › what-is-an-operating-system

   • Cached

   Nov 1, 2023 · An operating system is a system software that manages computer hardware and software resources and provides common services for programs. Learn about the functions, objectives, and types of operating systems with examples and diagrams.

7. www.britannica.com › technology › operating-systemOperating system (OS) | Definition, Examples, & Concepts ...

   www.britannica.com › technology › operating-system

   • Cached

   An operating system is a program that manages a computer's resources and runs other programs. Learn about the types, functions, and development of operating systems from Britannica's experts.

   • Author: David Hemmendinger

8. www.merriam-webster.com › dictionary › operating systemOperating system Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › operating system

   • Cached

   May 10, 2024 · Learn the meaning of operating system, a software that controls the operation of a computer and directs the processing of programs. See examples, word history, and related entries from Merriam-Webster dictionary.

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10. techterms.com › definition › operating_systemOperating System Definition - What is an operating system?

    techterms.com › definition › operating_system

    • Cached

    May 4, 2023 · An operating system (OS) is software that controls a computer's core functions and communicates with the hardware and allows programs to run. Learn about the different types of OS, their features, and how to choose one for your device.

11. edu.gcfglobal.org › en › computerbasicsComputer Basics: Understanding Operating Systems - GCFGlobal.org

    edu.gcfglobal.org › en › computerbasics

    • Cached

    Learn what an operating system is and how it manages your computer's software and hardware. Compare the most common operating systems for desktop and mobile devices, such as Windows, macOS, Linux, iOS, and Android.