What is the main task of the operating system?

Brief introduction. Simple operating system. It is the operating system configured in the early days of computers, such as IBM's disk operating system DOS 360 and microcomputer operating system CP M.

The functions of this type of operating system are mainly the execution of operational commands, file services, support for high-level programming language compilers, and control of external devices. Simple operating system, I think you must have tried, operating system class, but I just don't understand how those operating systems are made, how to run, if you want to understand, you can, look at the source code of the Linux core, the version of 5 million lines, just like the original 8,000 lines**, which is simply unimaginable for those who read** no more than 1,000 lines of computer system students, so I have an idea to achieve a source ** no more than 2,000 linesIt is an experimental operating system with simplicity as the main focus and performance as the secondary.

Simple operating system.

Included sections. In addition to the bootloader, it will consist of the following four parts:

1.Simple process scheduling.

2.Simple memory management.

3.Simple root file system.

4.Simple shell

Error correcting. Guess you follow.

Desktop operating system, Puhua operating system, customized operating system.

Basic tasks: manage and configure memory, prioritize supply and demand for system resources, control input and output devices, operate the network, and manage the file system.

Functions: Resource Management, Program Control, Human-Computer Interaction, Process Management, Memory Management.

Attach. The operating system of a computer can be said to be very important to a computer, and from the user's point of view, the operating system can be used for the computer system.

The resource sector carries out scheduling work, including software and hardware equipment, data information, etc., and uses computer operating systems.

It can reduce the work intensity of manual resource allocation, reduce the user's operation intervention in computing, and improve the intelligent work efficiency of the computer.

You can get a big boost.

The main tasks of the operating system are: responsible for the operation scheduling between multiple processes, the allocation of memory resources and **, the correct management of the file system (for example, when a file is in progress, if you want to delete the file at this time, it will be rejected for deletion), and so on.

The main tasks of an operating system are to handle basic tasks such as managing and configuring memory, prioritizing the supply and demand of system resources, controlling input and output devices, operating the network, and managing the file system.

There are many different types of operating systems, ranging from simple to complex on different machines, from mobile embedded systems to large operating systems for supercomputers.

When it comes to operating systems, most people's first impression is Windows and Linux on the computer and Android and iOS on the mobile phone. These programs run directly at the lowest level of the "bare metal" device, building the environment and foundation for other software and applications to run.

The positioning of the IoT operating system can be compared to the Windows operating system. The Windows operating system integrates the hardware of a single device, such as graphics card, sound card, screen, network card, etc., and provides driver development, application development kit and system application.

The main operating system.

Function. The main operating system.

Feature 1Processor Management Functions The main functions of process control are to create a process for a job, undo (terminate) a process that has ended, and control the state transition of a process while it is running. The main tasks of process synchronization are:

Coordinate the running of multiple processes, including threads. Process Mutual Exclusivity: This refers to processes.

The main task of an operating system is to provide an environment for software to run on hardware.

Answer] :d operating system is to manage all the hardware resources of the computer system, including software resources and data resources; control program operation; improve the human-machine interface; Provide support for other application software, so that all the resources of the computer system can be used to the maximum extent, and provide users with a convenient, effective and friendly service interface. The operating system is a huge management control program, which roughly includes 5 aspects of management functions:

Process & Processor Management, Job Management, Storage Management, Device Management, File Management.

Answer] :d converts the source program to the target ** is the task of compiling the trousers or assembler;

Responsible for word formatting and data calculation is the task of word processing software and computing software;

It is the task of the database management system to be responsible for storing and selling all kinds of data in the database and completing SQL queries;

The task of the operating system is to manage the software and hardware resources in the bridge of the computer system.

The operating system, that is, the computer management and control program, is the computer program that manages and controls the computer hardware and software resources, and is the most basic system software that runs directly on the "bare metal", and any other software must be supported by the operating system to run.

The operating system is the interface between the user and the computer, as well as the interface between the computer hardware and other software. The functions of the operating system include managing the hardware, software and data resources of the computer system, controlling the operation of programs, improving the human-computer interface, providing support for other application software, etc., so that all the resources of the computer system can play a maximum role, providing various forms of user interface, enabling users to have a good working environment, and providing necessary services and corresponding interfaces for the development of other software. In fact, the user does not need to touch the operating system, which manages the hardware resources of the computer and allocates resources to it according to the resource request of the application, such as:

Divide CPU time, open up memory space, call printers, etc.

There are quite a lot of types of operating systems, and the operating systems installed on various devices can range from simple to complex, which can be divided into smart card operating systems, real-time operating systems, sensor node operating systems, embedded operating systems, personal computer operating systems, multiprocessor operating systems, network operating systems, and mainframe operating systems. There are three main types of applications: desktop operating systems, server operating systems, and embedded operating systems.

The operating system is the management of all the hardware resources of the computer system, including software resources and data resources; control program operation; improve the human-machine interface; Provide support for other application software, etc., so that all the resources of the computer system can be used to the maximum extent, and provide users with a convenient, effective and friendly service interface. The operating system is a huge management and control program, which roughly includes five management functions: process and processor management, job management, storage management, device management, and file management.

At present, the common operating systems on microcomputers are DOS, OS 2, Unix, Xenix, Linux, Windows, NetWare, etc. However, all operating systems have four basic characteristics: concurrency, sharing, virtuality, and uncertainty.

The main task of OS is to provide human-computer interaction interface and manage computing functions such as CPU and memory.

At present, the operating systems of microcomputers are mainly: Windows, Macintosh, Linux, etc.

Mobile operating system: Google's Android, Apple's iOS, Microsoft's Windowsphone, etc.

There are two aspects:

1.Manage computer resources.

Manage files. Manage memory.

Manage devices. Manage the CPU

2.User-friendly.

The operating system (OS) is the most important program running on a computer. The operating system manages and controls the actions of the computer.

For example: Windows, Mac OS, Linux...

The main tasks of the operating system:

1) Control and manage the behavior of the system.

2) Allocate and allocate the resources of the system.

3) Scheduling operations.

1. Control and manage system behavior.

The operating system performs basic tasks such as identifying input from the keyboard, sending output to monitors, managing files and folders on storage devices, and controlling external devices such as box disk drives and printers. The operating system must also ensure that different programs and different users working on colleagues do not interfere with each other.

In addition, it is responsible for security issues to ensure that unauthorized users and programs cannot access the system.

2. Scheduling and allocating system resources.

The operating system is responsible for determining which computer resources (e.g., CPU time, memory space, disks, input and output devices) a program requires, as well as scheduling and allocating these resources to run the program.

3) Scheduling operations.

The operating system is responsible for the various behaviors of the scheduler to make the best use of system resources. Many programs now support multi-programming, multi-threading, and multi-process to improve the performance of the system.

The multi-program design allows multiple programs to share a single CPU to run synchronously. The CPU is faster than the other components of the computer. This results in the CPU being idle most of the time - for example:

When waiting for data to be transferred from disk or for other system resources to respond. Multi-programming operating systems take advantage of this situation by allowing multiple programs to use this CPU's idle time. For example:

Multithreading allows a single program to perform multiple tasks at the same time.

For example, a subprocessor allows the user to store the text on disk at the same time. In this example, and storage are two tasks in the same application, and the two tasks may be running at the same time.

Or: every carriage of a train, and the process is the train. The carriage cannot run away from the ** car, and the train cannot have only one carriage. ）

Multi-process, or parallel processing, uses two or more processors to work together to complete multiple subtasks that occur at the same time, and then group the solutions of those subtasks together to obtain a solution for the entire task.

For example, in a surgical operation, several doctors work together to treat the same patient.

1. Process management. The main thing is to manage the processor, especially the multi-tasking multi-user system.

2. Storage management. The main thing is the allocation of memory.

3. Equipment management. Management of all input and output devices.

4. Document management. It mainly involves the logical and physical organization of files, the structure and management of directories.

5. Operation management. Manage user requests.

The operating system is a computer program that manages and controls computer hardware and software resources, mainly to manage the software and hardware and data resources of the computer system, control the operation of programs, improve the human-computer interface, and provide support for other application software.

At the same time, the operating system is also the interface between the user and the computer, and the interface between the computer hardware and other software.

The main functions of the operating system include: job management, file management, storage management, device management, and process management.

The main task of the operating system is to deal with things like: