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List of contents of this article:

• 1, How difficult is it to write an operating system kernel? What are the general content and steps?
• 2. Operating System Principle
• 3. Advantages of Jinsheng Tongda Electronic Fence
• 4、 Can you write a computer operating system in half a month?
• 5, Use java to implement a program that simulates the operation of the operating system kernel. ( 1) Process control: this includes process...
• 6, How to write a simple operating system from zero

How difficult is it to write an operating system kernel? What are the general content and steps?

"A better student with a master's degree in computer science. Writing the kernel of an operating system is definitely something that should and can definitely be done." --- This sentence can be understood as "the theoretical knowledge of a good computer master is enough for him to build a simple operating system framework".

After finishing Brans, I partially referred to how difficult it is to write an operating system kernel? What are the general content and steps? - Recommended in To Qianmo's answer: hurley25/hurlex-doc · GitHub document, completed some simple debugging functions and library functions, printk and memory allocation.

One lost hardware foundation, surprising logical ability, assembly, C.

Write system functions based on kernel code and write some system functions to complete a simple operating system. It is not difficult to achieve a perfect industrial-grade operating system. But it is difficult to achieve a perfect industrial-grade operating system.

As long as you have learned assembly and C, you can only write a simple operating system, which can be done in a day or two.Write the applet you have written casually to the hard disk software directly (or make one yourself, call the WriteFile function of winapi), and write it to the hard disk/USB disk boot area. Remember that the starting address is 7c00.

The desktop operating system (Operating System) is the first-level basic software configured on computer hardware, which manages all the hardware resources of the computer system, which is divided into two categories: closed source and open source.



Operating system principle

1. The operating system (English; OperatingSystem, abbreviated as OS) is The bionic application of the human brain is very similar to the process of the brain controlling the human body. An operating system is a set of programs that manage computer hardware and software resources, and it is also the core and cornerstone of the computer system.

2. The operating system is the bridge responsible for communicating computer hardware and computer software in the computer structure. The operating system directly directs the hardware of the computer, such as the screen, keyboard and so on. The software, on the other hand, calls the function of the operating system, so as to achieve the purpose of calling computer hardware.

3. Hello! An operating system is a collection of system software that manages computer hardware resources, controls the operation of other programs and provides users with interactive operation interfaces.

4. In order to protect the operating system and important operating system tables from the interference of user programs, the operating system usually uses two modes to manage the process: privileged mode [also known as system mode), control mode or internal Kernel mode, and user mode.

Advantages of Jinsheng Tongda Electronic Fence

Jinsheng Tongda Electronic Fence adopts the advanced perimeter security concept of "blocking-based, auxiliary alarm", integrating "deterrence, blocking, alarm and safety".This article will deeply explore the advantages of Jinsheng Tongda electronic fence to help readers better understand the product.

The preferred electronic fence for perimeter alarm system: Jinsheng Tongda electronic fence is the abbreviation of intelligent perimeter security blocking alarm system. It introduces the latest security concept of "blocking is the main, alarm is the auxiliary".

The benefits of installing electronic fences in villas and communities are obvious. Prevention is better than accidents, and everything should focus on prevention.

Can you write a computer operating system in half a month?

Can you write a general graduation system in half a month? There is the following explanation for this problem: as long as the level is sufficient, it is still very simple to write a micro-nernel that only runs on a specific platform and only has thread scheduling in two weeks.

In fact, it is not difficult to develop an operating system. A few people can do it for a few months. One person developed a system in assembly language, 44M size, with mp3 playback, picture viewing,. The operating system is available, and the most important thing is its ecosystem, operating system driver, software and compiler.

Yes. Generally, you will have such ability after graduating from the computer department as a bachelor's degree. You need some assembly knowledge, computer principles, operating system principles, C and C knowledge, and data structure knowledge. This is enough for you to write a small system by yourself.

This is okay. The operating system itself is also composed of various programs, but its function is to manage computer hardware and provide users with an operation interface, so it is called an operating system.

Use java to implement a program that simulates the operation of the operating system kernel. ( 1) Process control: including process...

1. Startup program Java provides two ways to start other programs: (1) use Runtime's exec() method (2) use ProcessBuilder's start() Method No matter under which operating system, the program has some basically similar attributes.

2. From a logical point of view, the meaning of multithreading is that there are multiple execution parts that can be executed simultaneously in an application. But the operationThe system does not regard multiple threads as multiple independent applications to realize the scheduling and management of processes and resource allocation. This is the important difference between process and thread.

3. Multi-process - In the operating system, multiple tasks (programs) can be run simultaneously. Multithreading - In the same application, multiple sequential streams are executed at the same time.

How to write a simple operating system from scratch

1. At first, I looked for "30-day homemade operating system" to read, read books every day, and then typed the code from the book, one by one Compile and run. Because I have to write assembly and C at the same time, I have been using vim since then.

2. SubjectHello, how to write a simple operating system can't be explained clearly in a few words, and it can't be completed with one or two lines of code. To complete a simple operating system, print the boot sector of hello world under a bare metal. This requires sufficient knowledge of computer systems.

3. The compilation environment is roughly divided into 2 parts, binutils and gcc.

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