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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

     1/5

   • 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 operation which can’t...

     Check all answers on Geeksforgeeks

     4/5

   • Also try

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     computer operating system definition	real-time operating system definition
     linux operating system definition	unix operating system definition
     windows operating system definition	multi user operating system definition

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

   en.wikipedia.org › wiki › Operating_system

   • Cached

   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.

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

   www.techtarget.com › whatis › definition

   In this definition, learn what an operating systems is, how it works and manages all application programs in a computer, and about the types and functions of OSes.

5. 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 (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs. The operating system is the most important type of system software in a computer system.

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

   www.britannica.com › technology › operating-system

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   Jul 23, 2024 · operating system (OS), program that manages a computer’s resources, especially the allocation of those resources among other programs. Typical resources include the central processing unit (CPU), computer memory , file storage, input/output (I/O) devices , and network connections.

7. www.lifewire.com › operating-systems-2625912Operating System (OS) Definition & Examples - Lifewire

   www.lifewire.com › operating-systems-2625912

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   Jan 24, 2022 · An operating system is computer software that manages hardware and other software. Some operating system examples include Windows, macOS, and Linux.

8. 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. It communicates with the hardware and allows programs to run. The OS contains system software necessary for your computer to boot up and function and may include bundled applications like a web browser and text editor.

9. www.freecodecamp.org › news › what-is-an-os-operating-system-definition-for-beginnersWhat is an OS? Operating System Definition for Beginners

   www.freecodecamp.org › news › what-is-an-os-operating-system-definition-for-beginners

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   Aug 31, 2021 · With this understanding we can describe an Operating System ( OS) as a software that manages computer hardware and software resources and provides common services for computer programs. In simple English we can say an OS is an interface between the user and the machine that makes it easy for the user to achieve different tasks with ease.

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

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

    • Cached

    Jul 23, 2024 · The meaning of OPERATING SYSTEM is software that controls the operation of a computer and directs the processing of programs (as by assigning storage space in memory and controlling input and output functions).

11. www.g2.com › articles › operating-systemWhat Is an Operating System (OS)? Types, Functions, and More - G2

    www.g2.com › articles › operating-system

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    An operating system is a system software that, following the boot program, manages all hardware and software resources. It also provides services to different computer programs. Today, operating systems leverage device drivers to provide hardware environment-specific services.

12. www.howtogeek.com › 361572 › what-is-an-operating-systemWhat is an Operating System? - How-To Geek

    www.howtogeek.com › 361572 › what-is-an-operating-system

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    Aug 8, 2018 · An operating system is the primary software that manages all the hardware and other software on a computer. The operating system, also known as an "OS," interfaces with the computer's hardware and provides services that applications can use.