Online Trends

Introduction U disk is the abbreviation of USB disk, and USB drive is just a U disk homophonic name. U disk is a kind of flash memory, so also called flash disk. The biggest feature is: small and easy to carry, large storage capacity, cheap. is one of the removable storage devices. The general U disk capacity of 128M, 256M, 512M, 1G, 2G, 4G, 8G, and so on, the most common in the price of 1G, for example, 20 yuan can be bought. 2G Kingston only 35 yuan. U disk capacity has been greatly improved, such as: 4G, 8g,16g u disk. It is convenient to carry, belongs to the mobile storage device ...

Highly available ha (high availability) refers to improving system and application availability by minimizing downtime due to day-to-day maintenance operations (schedules) and burst system crashes (unplanned). It is different from the fault tolerant technique which is considered to be uninterrupted operation. The HA system is the most effective way for enterprises to prevent the core computer systems from being shut down. Features of high Availability (HA) 1, software fault monitoring and exclusion 2, backup and Data protection 3, management station can monitor the operation of each site, can be at any time or timing report system operation ...

Windows Vista is a version of Microsoft's Windows operating system. Microsoft initially officially announced the name on July 22, 2005, before operating system development code Longhorn. The internal version of Windows Vista is 6.0 (that is, Windows NT 6.0) and the official build is 6.0.6000. On November 8, 2006, Windows Vista was developed and officially entered mass production. The next two months only to MSDN users, computer hardware and software ...

A program is a group of instructions from a computer that can be compiled and executed to finally complete the program. The end result of programming is software. Until the middle of the 70, programming was just the work of information service professionals. The user's further knowledge and the variety of advanced programming languages that can be used enable users to enter the domain of software development. It is much easier for a user Manager to make a request for his or her multiple services in the office than to give a service request to someone else. A program is a collection of instructions that tells the computer how to perform special tasks. For example, it's like ...

Human flesh search engine (Manpower search engine), if you love him, put him on the human engine, you will soon know everything about him, if you hate him, put him on the human engine, because there is hell. 　　Human flesh search engine and tattoo, whitening, skin care, weight loss, etc. directly in human flesh on the implementation of all kinds of behavior has nothing to do. As the name suggests, human flesh search is the use of modern information technology, to change the traditional network information search for people, ask people, people touch people, people crowded people, people close to the relationship of network community activities, become boring query ...

Simply put, fault tolerance is when data, files are corrupted or lost in the system due to various reasons, the system can automatically restore these damaged or lost files and data to the state before the accident, so that the system can continuously normal operation of a technology. Fault-Tolerant ft (Fault tolerant) technology typically uses redundant hardware to cross-detect operational results. As the processor speeds up and prices fall, more and more software is transferred. Future fault-tolerant technology will be completely completed in the software environment, and the difference between it and high availability technology disappears.

The so-called "Semantic Web" is the terminology defined by the computer industry and the Internet industry for the next stage of development of the network, the basic meaning of which is to establish any small data connection based on the network, which is not limited to Web pages. 　　As a result, any tiny data can be "communicated" to other information. The existing Internet network is a collection of web pages, and Google and other search engines are the links between the pages to help users search the Internet. In contrast, the "Semantic Web" will establish a direct connection between more subtle information, such as the ground of a street ...

The Internet (translated Internet, Internet) is the name of a group of global information resources, the amount of which is very large, incredibly large. Not only do no one know the full content of the Internet, but even no one can say much about the Internet. The foundation of Internet was built on the computer network group that developed in the 70 's. It began as a network of ARPANET, funded by the U.S. Department of Defense, whose original arpanet had long been extended and replaced and now replaced by its offspring, the Internet. ...

The basic function of ARP protocol is to inquire the MAC address of target device through the IP address of target device to ensure the communication. Based on the ARP protocol of this work characteristics, hackers to the other computer to send a fraudulent nature of the ARP packet, the packet contains a duplicate of the current device MAC address, so that the other in response to the message, due to a simple address repeat error caused by the normal network communication. In general, the ARP attack on the computer will appear two phenomena: 1. Constantly eject "xxx section of this machine hardware address and network XX ...

The term Web 3.0 contains a number of meanings that summarize the various directions and characteristics that may arise during the development of the Internet, including the conversion of the Internet itself into a generic database; cross-browser, browser content delivery and request mechanisms; application of artificial intelligence technology; Semantic web; geographic mapping Network Use 3D technology to build a website or even a virtual world or a network principality. Web 3.0 Features: First, WEB3.0 API (Application programming Interface) is a global scope, that is, xmlwebservices;

LDAP is the abbreviation for the English Lightweight Directory Access Kyoto, the Lightweight directory accesses protocol. It is a protocol to access the online directory service. What is a directory? The LDAP directory can store various types of data: e-mail addresses, message routing information, human resources data, public keys, contact lists, and so on. The latest version of the LDAP protocol is defined by RFC 4511. It's based on the X.500 standard, but it's much simpler and can be tailored to your needs. Unlike X.500 ...

January 9, 2007, Apple unveiled a compact, lightweight handheld device that integrates innovative mobile phones, touch widescreen ipod®, and groundbreaking Internet communication devices with desktop-level e-mail, web browsing, search and map capabilities. The iphone introduces a new user interface based on large multi-touch displays and leading new software, allowing users to use their fingers to control the iphone. The iphone also ushered in a new era of cutting-edge features of mobile device software, redefining the capabilities of mobile phones. “...

The BIOS (basic Input output system) basic output input systems. is a ROM chip integrated on the motherboard, which holds the system's most important computer essential input/output programs, System Information settings, power-on self-test and System startup self-test programs. The BIOS ROM chip is visible on the motherboard. Whether a motherboard is superior or not depends largely on the advanced BIOS management function on the board. BIOS Main Features: 1, power-on Self Test (power On self T ...

Wi-Fi is a wireless network communication technology brand, held by the Wi-Fi Alliance. The goal is to improve interoperability between wireless network products based on the IEEE 802.11 standard (the common standard for wireless LANs). Often mistaken for the shorthand of wireless fidelity. Currently released by the Wi-Fi Alliance certification types are: WPA/WPA2:WPA/WPA2 is based on IEEE 802.11a,802.11b,802.11g Single-mode, dual-mode or dual-frequency products established by the test procedures. ...

With the advent of the concept of fieldbus in the past 20 years, several Fieldbus technologies have appeared and matured. Can bus has been recognized as one of several of the most promising fieldbus. Can is a high-performance serial data local communication network composed of can controller, which is one of the most widely used fieldbus in the world. At first, can was designed as a micro-controller communication in automotive environment, exchanging information between ECU of electronic control devices in vehicle, and forming automobile electronic control network. Because of its fast communication speed, high reliability and good performance price ...

GSM Full name is: Global System for Mobile Communications, the Chinese language for mobile communication systems, commonly known as the "global", is a originated in Europe, the mobile communication technology standards, is the second generation of mobile communication technology, The goal is to make it possible for a mobile phone network to be used globally across the globe, allowing users to use a single handset. China introduced the adoption of this technical standard in the early 1990s, has been the use of cellular analog mobile technology, the first generation of GSM ...

Object-oriented (object oriented, OO) is the focus of the current computer industry, it is the mainstream of software development methods in the 90 's. Object-oriented concepts and applications have gone beyond programming and software development to a wide range. such as database system, interactive interface, application structure, application platform, distributed system, network management structure, CAD technology, artificial intelligence and other fields. On the surface, the object-oriented term means to organize software into a series of discrete objects that combine data structure and behavior. This is the data in the previous software development method ...

PDA is the abbreviation of personal Digital Assistant, literally meaning "personal digital assistant". This handheld device focuses on computing, telephone, fax, and network functions. It can be used not only to manage personal information (such as Address Book, plan, etc.), but also to browse the Internet, send and receive emails, fax, and even use it as a mobile phone. Particularly important, these features can be implemented wirelessly. Of course, not any PDA has all of the above functions, even if they have, may be due to lack of appropriate clothing ...

ERP is the abbreviation of English Enterprise Resourse calculates, Chinese meaning is enterprise resource planning.    It is a management accounting as the core information system, identification and planning of enterprise resources, so as to obtain customer orders, complete processing and delivery, the final customer payment.  In other words, ERP integrates all the resources within the enterprise to plan the procurement, production, cost, inventory, distribution, transportation, finance and human resources so as to achieve the best resource mix and achieve the best benefit. ...

Flash memory, also known as Flash, is a commonly used type of memory in routers. It is a read-write memory that can still be saved after the system restarts or shuts down. The current iOS (Router operating system) is stored in Flash. In fact, if the flash capacity is large enough to hold more than one operating system, this can be useful for iOS upgrades. When you do not know whether the new version of iOS is stable, you can retain the old version of iOS after the upgrade, and when there is a problem can quickly return to the old version of the operating system, so as to avoid a long network failure. FLA ...