more and more complicated. Then invented the thread, thread is a single sequence control process in the program execution, is the smallest unit of program execution flow, is the basic unit of processor dispatch and dispatch. A process can have one or more threads, sharing the memory space of the program between threads (that is, the process memory space in which it resides). A standard thread consists of a thread ID, the current instruction pointer (PC
supports the development environment and application standards for the domain.
Next 5 ~ 10 years
Development Trend of embedded systems and software technology
Industry standards: industry-based embedded software development platform
An embedded system is an application-centered system. it does not have only one platform like a PC, but it will learn from PC's su
Lab 0 understanding and familiarity with the operating systemI. Purpose and REQUIREMENTS1. Purpose of the experiment(1) Master the definition and concept of the operating system;(2) Understand the development history of various types of operating systems;2. Experimental requirementsUse Web search to learn about various
user powers on the PC, BIOS boot self-check, start according to the boot device set in BIOS (usually hard disk,Start the boot program lilo or grub installed on the device to boot Linux. Linux first performs kernel boot,Next, run the init program. The init program calls rc. sysinit and rc programs. When rc. sysinit and rc complete the systemAfter initializing and running a service task, return init; init starts mingetty and opens the terminal for user
are different.process StatusProcess Status:
NEW: The process is being created
Run (RUNNING): instruction is being executed
Wait (wait): The process waits for an event to occur (such as I/O completion or signal received)
Ready: Process waits for the processor to be allocated
Terminate (TERMINAL): Process completes execution
Only one process can run on one processor at a time, but multiple processes can be in a ready or waiting state.
Process Control block (PCB
Embedded Operating System (wince)
1 Introduction to the embedded operating system Windows CE. netWindows CE. Net is a successor to Windows CE 3.0. Windows CE. NET is re-designed for the embedded market and provides a robust real-time operating
Edition: It is a 32-bit operating system, primarily for entry-level computer users in emerging markets, which only supports running 3 applications at the same time, and does not support logon passwords or Fast User Switching (FUS). Overall, Windows Vista Starter Edition is similar to the Windows XP Starter Edition.
-Windows Vista Home Basic Edition: It is a simple version of Windows Vista, primarily for s
1. Install Virtual PC ),
My is: http://www.crsky.com/soft/759.html
The downloaded version is virtual PC 2007 SP1 v6.0.192.0.
2. Install MS-DOS
My is: http://www.onlinedown.net/soft/2465.htm
My downloaded version is: MS-DOS 7.10
However, during the installation process, I found that this version is a virtual floppy disk and has two virtual floppy disks. During the installation process, the virtual
(5) In the Run.exe console click Return (First round, two times after the Click Return)
(6) Return to step two ...
Here is the experimental code:
A simple program written in the boot sector--Displays a string on the screen.
Although there are countless versions of the online example, here, I still have the shameless to share with you.
Code:run.c
Files: run.c//function: Compile the operating system code a
, the URL is: http://www.broadview.com.cn/01577 (need to log in first), can also be in HTTP://OSFROMSCRATCH.ORG/DOWNLOADCN Download the source code.
First, start to build the working environment:
1. One computer (Windows operating system)
2. Virtual Machine VirtualBox
Can be downloaded on the official website, download address: http://www.virtualbox.org/wiki/Downloads
VirtualBox is chosen because it is ope
system, can only be applied to Apple's own production equipment, so the application surface is narrower. But because of the good sales performance of ipad and Apple's notebooks now, the use of the crowd also has a considerable scale. Its operation is very convenient, the user experience is quite perfect, but its application surface is much narrower.In the peace talks on the mobile phone operating
In the operating system, the first chapter is the introduction of the operating system. After drawing a picture of the first chapter, it is found that the introduction is mainly about the computer system. This article introduces the entire computer
balancer haproxy, Web server Nginx, and so on, all the programs involved in the pressure measurement are encapsulated in thousands of Docker container instances.In June 2015, Facebook funded the Tsinghua Institute for Interdisciplinary Information Sciences to set up China's only OCP laboratory. The OCP is a 5-year-old open source hardware project, founded by companies such as Facebook, designed to design next-generation data center hardware through open source, including storage, networking, se
with the help of a third-party mobile device management (MDM) tool in a few months.
Recall that in July March this year, RIM began to promote the market for its unofficially released BlackBerry PlayBook tablet, and said that its QNX operating system would be able to smoothly run Android applications. It turns out that these scams once again played with our feeli
Desktop operating systems can also be said to be a personal computer system, generally refers to the computer installed on the PC graphics interface operating system software. The operating sy
Operating System: Win8.1 vs. OS X Yosemite (1)
With the official release of OS X 10.10 Yosemite and the completion of the update cycle of Windows 8.1 within 2014, these two models represent the highest level of solutions in the PC operating system field. Who can beat the c
Utopic Unicorn utopia Unicorn
15.04 Vivid Vervet long tail black jaw monkey
Comments: I don't know half of the animals mentioned here. Is it named by the Animal Protection Association? However, regardless of the name, the Ubuntu system is still
Very reliable operating system.
Android
No development code for
website, and it is a free system of Microsoft Pure Edition)In the site download, the first to download the connection to the Thunderbolt, before it can be downloaded.(4) The current mainstream Windows system
WINDOW7 currently the first mainstream about 45% of the window system share
WINDOW10 about a 37% share of the window
system market, so it is positioned in cheap mobile phones in Developing Countries, Mozilla even hopes to reach the lowest price for smartphones to $25.
Firefox mobile phone systems have indeed received support from some mobile phone manufacturers, especially Chinese enterprises that want to occupy low-price mobile phones in developing countries, including Huawei, ZTE, and Alcatel brands owned by TCL.
Many Firefox mobile phones were listed one after a
;The following is the official beginning of the installation of the operating system, patience to wait.after installation, you need to manually set a the name of the PC machine. 650) this.width=650; "style=" Float:none; "title=" Picture 23.png "alt=" wkiom1uae4xaerlcaajj0bruaew724.jpg "src="/http S3.51cto.com/wyfs02/m00/5b/2b/wkiom1uae4xaerlcaajj0bruaew724.jpg "/
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