sonet systems

1.1 Overview of embedded systems 1.1.1 definition and composition of Embedded Systems Embedded systems are application-oriented, computer-based, and can be used to reduce hardware and software. They are suitable for application systems, dedicated computer systems with specia

If you have an IBM power Systems environment, it is important that you get enough hardware and software support. This support not only ensures that there is room for manoeuvre in the event of a system failure, but also allows you to get new versions and bug fixes that will help prevent you from getting frustrated in the first place. Keeping your running software and firmware up to date is easier when you need to migrate to new hardware. Get a support

Tags: process www dependency relationship mbed Type Master use case method Network applicationTransferred from: 4 Tools for building embedded Linux systemsLinux was deployed to a wider range of devices than Linus Torvalds in his dorm. The shocking support for a variety of chips allows Linux to be used on large and small devices: from IBM's jumbo machines to tiny devices that are not as large as the ports they connect to, and devices of all sizes. It is used in large enterprise data centers, Inte

[Arm] real-time performance of embedded systems Author: House of embedded engineers 10:27:00 With the advent of the Post-PC era and the era of network and communication technology, a large number of computer professionals have entered the field of embedded applications. However, a large number of embedded system applications are in the form of single-chip microcomputer, it is applied in the traditional electronic technology field. Therefore, the Compu

goal: not only to ensure the efficiency of the computer, but also convenient for users to use the computer. In the the mid 1960s, the development of computer and software technology made this pursuit possible. Timeshare Systems because of the increasing CPU speed and the use of time-sharing technology, a computer can connect multiple user terminals simultaneously, and each user can use the computer on their own terminal, as if their own machine.　　

Author: Lu Xixian, HUANG Tao, Zhu xianxin, Wuhan University of TechnologyAbstract: an embedded operating system is the core software for embedded system applications. This article compares two typical open-source embedded operating systems, analyzes and summarizes several issues in embedded operating system applications, and summarizes the basis for selection of embedded operating systems.Keywords: Embedded System Operating System uC/OS uClinuxIntrodu

Original article: http://www.erlang.se/publications/mnesia_overview.pdfAbstract: The mnesia DBMS and the application system with data run in the same address space. However, the application system cannot destroy the database content. Mnesia also provides fast access features and good fault tolerance. These two requirements are usually conflicting. Mnesia is implemented based on the features of the Erlang programming language. mnesia is also embedded in Erlang. 1. Introduce that data management i

1. Embedded root file system Linux supports multiple file systems, including ext2, ext3, vfat, NTFS, iso9660, jffs, romfs, and NFS. to centrally manage various file systems, linux introduces Virtual File System (VFS), which provides a unified operation interface and Application Programming Interface for various file systems. During Linux Startup, the first file s

Distribution and desktopThe desktop options for distributions are one of the main ways to attract you to become their users.You might ask, "Wait a minute, you mean the desktop option?" Yes, Linux offers a variety of desktop environments, or shells called graphics classes, which are "cool" to extremely clean and minimalist. Unlike those operating systems that normally only provide a single graphical shell (if not the only option), Linux allows you to i

Overview:CentOS as a server deployment is the first choice. CentOS removes many applications unrelated to server functionality, simple but very stable , command-line operations that facilitate management systems and applications, rich help documentation, and community support.The best applications for Ubuntu are desktop operating systems and not server operating systems.Debian as a server choice, but due t

With future upgrades to file system protocols, such as NFS (including concurrent NFS, or PNFS), will NFS potentially replace many of the existing proprietary file systems? Let's take digitalfilm tree for example, a company in Hollywood that provides post-processing and virtual effects services for the entertainment industry. The company employs products that include Apple Xsan, HP storageworks arrays, QLogic switches, and other storage vendors. They

Tags: Linux file system mountFirst, the creation of the file system-partition formatFormatting:Low-level formatting: dividing tracksAdvanced formatting: Create a file system that divides the entire partition into small logical addressing units of the same size, each of which is called blocks (block), according to a specific standard.The standard for dividing blocks: in Linux file systems, the main block partitioning standard is: Each block includes 2^

The characteristics of four real-time operating systems (RTOS) are analyzed and compared in this paper. They are: Lynx Real-Time Systems Inc. 's LynxOS, QNX Software Systems Limited, and two representative real-time linux--Kansas at Rt-linux and Kurt-linux University of the New Mexico Institute of Technology. In recent years, the real-time operating system has be

hard disk, if you want a file system that spans multiple hard drives, the partition tuning program does not solve the problem.Therefore, the perfect solution should be in the 0 downtime under the premise of the size of the file system can be easily adjusted to facilitate the implementation of the file system across different disks and partitions. Fortunately, the Logical Disk volume management (lvm,logical Volume Manager) mechanism provided by Linux is a perfect solution.LVM is the short name o

restarts, choose to go to the Recovery Console, the console will prompt you to log in to which windowsxp installation, generally choose the default "1", type the system administrator password, you enter the console of the Windows directory, Type "Bootcfg/add", the console will scan the Windows installation, a few seconds after the scan is complete, prompted to select the installation to add, choose "1", and then prompt for the input load identifier, you can enter "Microsoftwindowsxpprofessional

The file system is the short name of a file management system, which, according to Wikipedia, is used to organize how data is stored on storage media and how it is retrieved. Without a file system, the information on the storage medium will be a large piece of information, there is no way to know when a message will end, and can not know when the information began, the management of information will be very troublesome.?? There are many types of file systems