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Why computer need operating system?
Technically they don't. They're just much much more useful with one. The operating system provides a means to run other programs and do basic housekeeping chores on the computer.A computer can be built to run without an operating system, instead executing a particular program at startup which then takes over control of the computer and handles everything internally. In fact, an operating system itself is just such a program, though one that can temporarily transfer (partial or complete) control over to other programs.
What is the difference between multitasking multiprogramming and multithreading?
Multiprogramming is a rudimentary form of parallel processing in which several programs are run at the same time on a uniprocessor.Since there is only one processor, there can be no true simultaneous execution of different programs. Instead, the operating system executes part of one program, then part of another, and so on. To the user it appears that all programs are executing at the same time. Multitasking, in an operating system, is allowing a user to perform more than one computer task (such as the operation of an application program) at a time. The operating system is able to keep track of where you are in these tasks and go from one to the other without losing information Multithreading is the ability of a program or an operating system process to manage its use by more than one user at a time and to even manage multiple requests by the same user without having to have multiple copies of the program running in the computer
What is an operating system?
An operating system can be defined as a global application that acts as an intermediary between a computer user and the computer hardware. It manages the hardware and software resources of a computer. It allows the computers to run programs. An operating system allows the computer to start and function. It allows you to navigate your computer. It allows all the components of a computer to operate together to do tasks such as printing text to a printer. A word processor application sends its print request to the Operating System and the operating system carries out that task. A computer would likely be unusable without an operating system, unless the software is able to act as its own OS. The goals of Operating system is to execute user programs and make solving users problems easier, to provide a convenient environment for the development and execution of programs, and to schedule computational activities to insure good performance of the computing system. Some operating systems are more user friendly than others. Ideally, the system should include easy to use icons, and easy to use pop-up instructions as needed. It can either be a graphical user interface (such as Windows, Mac, OSX) or a command line (Linux/Unix/DOS). It is the background in which all other applications and services run. An operating system has two primary functions. Firstly, it dictates to application programs what they can and cannot do. Secondly, it manages the computer hardware on behalf of applications. The two functions are not unrelated. It also manages execution of user programs to prevent errors and improper use of computer and operations and controls of I/O devices. If you had two applications, A and B running on the same computer, and no operating system to supervise them, then program A could overwrite the memory occupied by program B, or vice versa, program A could overwrite program B's files on disk. You could have the two programs trying to read from the same keyboard, or print on the same printer, simultaneously, and so on. Additionally, if there was no operating system to manage the hardware, then applications would need to concern themselves with the minutiae of how to save data to disk by programming the hard disk controller, or obtain input from the keyboard by interrogating the keyboard controller, instead of getting on with the calculation of somebody's payroll, or whatever else that application was supposed to do. Computers with no operating systems relies on the application programs to manage minimal hardware. For instance, application programs would need I/O support libraries.
A text based operating system?
A text based OS is an OS that uses commands that are typed in instead of using a mouse and graphics.
What is a computer stub in operating system?
A small software routine placed into a program that provides a common function. Stubs are used for different reasons. For example, a stub might be installed in a client computer, and a counterpart installed on a server, where both are required to resolve some protocol. For example in a remote procedure call (RPC) Stubs are compiled and linked with the client application, instead of containing the actual code that implements the remote procedure. The stub contains just enough code to allow it to be compiled and linked with the rest of a program. Stubs are often used as placeholders for a routine.
When windows spends most of its time managing virtual memory by paging instead of executing application software it is said to be?
thrashing
What is another word for programs on a computer?
A computer program can be referred to as software or an application.
Is assembler a system software?
Yes. Software branches into : -System software -application software -programming Languages System software then branches into: -Operating System -Operating environment -Utilities -Programming Languages -Translators And translators includes Assembler as well as compilers and interpreters.
The most important piece of software on a personal computer?
The operating system is the most important part of a operating system because without an OS you will not be able to do anything with your computer and it will effectively be useless, instead of a computer you have a pile of components that does nothing
What is a method of developing software in which the programmer writes and implements a program in segments instead of waiting until the entire program is completed?
RAD (rapid application development)
Is software the same as software application?
Parts are, but by definition, they are different things.Application software can be defined as:Designed to help the user to perform a singular or multiple related specific tasks.A set of computer programs which work together to solve a particular problem or to be used for a particular user-defined applicationSystem software can be defined as:Designed to operate the computer hardware and to provide and maintain a platform for running application software.A term for a complicated set of programs that act together to allow a computer & other programs to function.Hi, they are different.System software usually manages the computer systems of various independent hardware, enabling them to coordinate their work. It makes both users and software consider PC as a whole instead of different hardware. System software includes operating system and a series of basic tools.Software application is developed for specific purpose. Sometimes, it is released as a specific program while sometimes it is a collection of programs.
What is a soft ware?
The correct spelling is database software instead of database softwear. Database software is a utility or software program. It is used to make databases and manage and edit the information that is kept in them.
Is application is the same as software?
Parts are, but by definition, they are different things.Application software can be defined as:Designed to help the user to perform a singular or multiple related specific tasks.A set of computer programs which work together to solve a particular problem or to be used for a particular user-defined applicationSystem software can be defined as:Designed to operate the computer hardware and to provide and maintain a platform for running application software.A term for a complicated set of programs that act together to allow a computer & other programs to function.Hi, they are different.System software usually manages the computer systems of various independent hardware, enabling them to coordinate their work. It makes both users and software consider PC as a whole instead of different hardware. System software includes operating system and a series of basic tools.Software application is developed for specific purpose. Sometimes, it is released as a specific program while sometimes it is a collection of programs.
What is Data Execution Privention and How it can be helpful?
Data Execution Prevention (DEP) is a security feature included in modern operation systems. It is available in Linux, Max OS-X and the newer Microsoft Windows operating systems and is intended to prevent an application or service from executing code from a non-executable memory region. This helps prevent certain exploits that store code via a buffer overflow, for example.[1] DEP runs in two modes: hardware-enforced DEP for CPUs that can mark memory pages as nonexecutable, and software-enforced DEP with a limited prevention for CPUs that do not have hardware support. Software-enforced DEP does not protect from execution of code in data pages, but instead from another type of attack (SEH overwrite).
Difference between computer application and computer science?
AnswerAn application is a program in general, for instance, Internet Explorer, Microsoft Word and Notepad.A process is single instance of an application whilst it is running.
Would Quickbooks be considered a Application software?
QuickBooks is a software package for accounting and it is composed of a number of application softwares. These applications store and undertake specific transactions in accounting like invoice, inventory, payroll, accounts payable, and other accounting modules.Yes QuickBooks is an application software.
Can you put the word banish in a sentence?
The king will banish the spy instead of executing him. Banish your spots with this medicinal cream!
