A group of two or more computer systems and their mutual relations. There are many types of computer networks, including:
Local area network (LAN): PC geographically close together (that is, in the same building).
And wide area networks (WAN): PC away from each other and connected by telephone lines or radio waves.
Campus area networks (boxes): computers within a limited geographical area, such as a campus or military base.
Metropolitan Area Networks MANS): data network designed for the city.
Home area networks (Hans): network within the house of a person to link users of digital devices.
In addition to these species, the following attributes are also used for the classification of the different types of networks:
Topology: geometric layout of the computer system. Mixed topologies include bus, star, and the ring. See charts and network quick reference section of Webopedia.
Protocol: Protocol defines a common set of rules and signals that computers use the network. One of the most popular protocols called Ethernet LAN. Another popular protocol LAN PC is the IBM token cordoned off the network.
Structure: networks can be regarded as using a peer or client / server structure.
PCs on the network is sometimes the contract. The computers and devices that funds for the network called servers.
(Against) to connect two or more computers with the ability to communicate with each other
Thursday, December 18, 2008
What is Networking?
What is Internet?
What is Internet?
Internet, sometimes just a "net", is a global system of computer networks - a network of networks that enable users at any one computer, if they have permission to get information from another computer (and sometimes speak directly to the computers of other users) . It was developed by the Advanced Research Projects Agency (ARPA) from the Government of the United States in 1969 and was first known as the Arpanet. The original objective of establishing a network that would allow users of computers in university research to be able to "talk" computer search of other universities. One aspect of the benefit is that the Arpanet project, that the letters could be ravaged or roads in more than one direction, can reach the network to continue operating even if parts of it were destroyed in the event of a military attack or other disasters.
Internet today is an open, cooperative and self-sufficiency facility access to hundreds of millions of people all over the world. Physically, the Internet and used part of the total resources of the existing public telecommunications networks. Technically, what is the use of the Internet to a set of protocols called TCP / IP (for TCP / IP). Two recent amendments of Internet technology, Intranet and Extranet, and also take advantage of the TCP / IP protocol.
For many Internet users, electronic mail (e-mail) practically Postal Service for short transactions in writing. E-mail application is the most widely used on the Internet. You can continue to live 'talks' with other computer users, using a carry-over Internet chat (Center). Recently, the Internet telephone equipment and software allows real-time voice of the talks.
The most widely used part of the Internet is the World Wide Web (often abbreviated reflect "WWW" or "Internet"). Outstanding feature is hypertext, a way of immediate cross-referencing. In most locations, and some words or phrases in the text of a different color from other countries, and often emphasized the text. If you have any of these words or phrases, will be relocated to the site or page that is relevant to that word or phrase. Sometimes there are buttons, images or parts of images, "click". If you move the pointer over a spot on a Web site and the index changes on the one hand, this means you can click and transfer to another site.
Using the Internet, you will have access to millions of pages of information. Are surfing the Internet with a Web browser, including the most popular Microsoft Internet Explorer and Netscape Navigator. The emergence of a particular location can vary slightly as the browser you are using. Even in later versions of the browser capable of the most special of the "bells and whistles" such as animation, virtual reality, voice and music files from previous versions.
What is Class?
The Jacob. Esau not. Symbolically, we can look at Jacob wrestling match with the owners. Those who suffer from the class of owners and won a personal victory to record them.
Class never makes excuses. It takes lumps and learn from the mistakes of the past.
Class is the spirit of others. He knows that good manners are nothing more than a series of small sacrifices.
This is the aristocratic class, which had nothing to do with ancestors or money. The richest blue blood class can be fully without the strain of the mud, while the Welsh miners in May of each class porosity.
Class could walk with kings and maintenance of good morals and talk with crowds and keep in contact. "Anyone comfortable with the person class that comfortable with themselves.
If you have class you do not need much of anything else. If you have not, whatever you have another, but does not change that much.
What is Word?
Using the computer to create, edit and print documents. Of all computer applications, word is the most common. To perform word processing, necessary for the computer, a special program called a word processor, and printer. The word processor you can find a document of the documents, electronically stored on the hard disk, and presented on the screen, by means of an amendment orders and personalities of the keyboard and print to the printer.
The great advantage of word processing using more than a typewriter is that you can change without re-printing the entire document. If you have a mistake, you just support the indicator and correct your mistake. Do you want the paragraph, you simply remove it, without leaving any trace. It is equally easy to add the word, sentence or paragraph in the middle of a document. Word processors also make it easy to move sections of the text from one place to another within a document, or between documents. When you've made all the changes you want, you can file to the printer for the paper.
Word processors vary, but each word processors support the following basic features:
Add the text: You can include text somewhere in the document.
Deleted text: Allows you to delete characters, and the words, lines, or pages that you can easily cross them on a sheet of paper.
Cut and paste: Allows you to remove the (spare) part of the text from one place in a document of the add (paste) elsewhere.
Version: Allows you to duplicate part of the text.
Page size and margins: Allows you to determine the different dimensions and margins of the page and automatically adjust the word of the text so that it fits.
And replacing the search: Allows you to direct the word processor to search for specific word or phrase. You can also direct a word to replace a set with the last letter of each place that the first group is shown.
Final word: the word to the next when you have a line filled with a single text, and that changing the text if you margins.
Print: Allows you to a document to a printer for the newspaper.
Word processors that support these features alone (and maybe a few others) and called text editors. Most word processors, but additional support function that allows you to manipulate and format of documents in more sophisticated ways. These more advanced word processor sometimes very complete word processors. Fully equipped word processors generally support the following characteristics:
File management: many, the word processor file administrative capacity that enables you to delete, transfer, searching for files.
Line Features: Allows you to the lines within a document. For example, you can bold, italic and underlined. Most word processors also allow you to set the font size on the line.
Notes and references: automatic numbering and footnotes, and you can easily cross-reference other sections of the document.
Graphics Graphics: You can also photos and graphics in a document. Some word can change the setting of illustrations in a word processor lets you another example produced by different programs.
Capital, margins and pagination: Allows you to determine the capital-conditioning and margins that the word processor will be at the top and bottom of each page. Word processor automatically tracking page numbers, so that the correct number appears on each page.
Design: Allows you to define different margins within a single document and identifying different methods of indenting paragraphs.
Macro: the holistic nature of the word, which is a series of strikes the keys. The text can be a major strikes or orders. The possibility of macros you can do a lot of time by replacing the common set of keys strikes.
Integrates: Allows you to integrate text, a file to another file. This is especially useful for many of the files that have the same format but different data. Generation of e-cards is a classic example of the use of integrated.
Clarify Examiner: tool that you can check the spelling of words. It will highlight all the words that they do not recognize.
Table of Contents and indexes: Allows you to automatically create table of contents and an index of blogs on the basis that you add in this document.
What is Service?
What is Software?
Software can be seen as part of the change of hardware and constants part. Software is often divided into application software (programs that do the work directly to the user) and system software (including operating systems and any program, supported by application software). Intermediate term is sometimes used to describe the programming that mediates between application and system software or between two different types of application software (for example, sends a request to work after the application of computers in which one type of operating system called for in other computer operating system ).
Applications are small applications that sometimes comes with the operating system "accessories". They can also be created using a separate Java or other programming languages.
What is SAP?
SAP, started in 1972 by five former IBM employees in Mannheim, Germany, and that is one of the world's largest software company and the world's fourth-largest independent software supplier, in general.
The original name of the structural adjustment program was the German system, applications, products, the German "systems, applications and products." The idea of the original scheme was to provide customers the ability to communicate with the database to limited liability companies a comprehensive set of applications. Gradually composed applications and today many companies, including IBM and Microsoft are using SAP's products to their own businesses.
SAP applications that focus on the latest R / 3 system, and the ability of asset management, cost accounting, production equipment, personnel, plants, archived documents. R / 3 system works with a number of platforms, including Windows 2000 and used client / server model. The latest version of R / 3 provides a comprehensive web-enabled transactions.
SABBE recently the marketing of the products on comprehensive framework and web interface, called mySAP.com, and added new e-business applications including customer relationship management and supply chain management (SCM).
With effect from January 2007, Saab, the company is publicly traded, more than 38.4000 employees in more than 50 countries and more than 36,200 customers around the world. SAP and pulls his attention to small and medium-sized enterprises (SMEs). A recent R / 3 version had been submitted to all IBM AS/400 platform.
What is Market?
Marketing is the habit of creative industries, including advertising, and distribution and sales. It is also involved in predicting future customer needs and wants, which are often found through the market research.Marketing affected in many social sciences, especially psychology, sociology and economics. Anthropology is also a small but growing influence.
Market research by these activities. Through ads, as it related to many of the creative arts. Marketing literature is also famous for reinventing itself in the vocabulary, age and culture.
Wednesday, December 17, 2008
What is Computer?
• answer to a specific set of instructions in the way of well-defined.
• can be done in advance a list of instructions (program).
Modern computers have been electronic and digital. The actual mechanism - cable, transistors and services - and called devices;, instructions and data, called software.
All the following general objectives required hardware components:
• Memory: To enable the computer to store at least temporarily, data and programs.
• storage device: allow your computer to retain large amounts of data. Joint mass storage devices, including innovative and competitive devices.
• Participation of the device: This is usually the keyboard and mouse, which contributes to data entry and computer instructions.
• output: screen, printer or other devices that allow you to see through the computer.
• The central processing unit (CPU): the heart of the computer, this element is, in fact, the implementation of the instructions.
In addition to these elements, and many others allow for essential elements to work together effectively. For example, a computer needs a bus transfer data from one part of the computer to another.
Computers and can be broadly classified by size and content as follows, although there is considerable overlap:
• PC: Small, a user based on computer microprocessors. In addition to microprocessors and PC keyboard for entering data and monitoring the information and means to save storage.
• Workstations: strong, a user of the computer. There are workstations, such as personal computers, but this is the most powerful microprocessors and high quality management.
• Calculator: A multi-user computer capable of supporting 10 to hundreds of users simultaneously.
• PC: strong, multi-user computer suitable for many hundreds or thousands of users simultaneously.
• Supercomputer: high-speed computers, which can lead to hundreds of millions of instructions per second.
What is System?
The dynamics of the system is a powerful methodology for modeling and simulation software for the way in the formulation and understanding and discuss issues and complex problems. Originally developed in the 1950s to help corporate managers and improve their understanding of industrial processes, the dynamics of the system currently being used throughout the public sector and the private sector for policy analysis and design.
The dynamics of the system is the aspect of the theory of systems as a way to understand the dynamic behavior of complex systems. On the basis of the way is the recognition that the structure of any system - many of the circular, complex and sometimes late in the relations between its components - often no less important in determining the conduct of the individual elements themselves. For example, the theory of chaos and social dynamics. It also claimed that in many cases because there is full ownership of the importance that can not be found among the elements of the property, in some cases, the behavior of the whole can not be explained in terms of the behavior of the parts.
The dynamics of the system established in the mid-1950s by Professor Jay Forrester from the Massachusetts Institute of Technology. In 1956, Forrester accepted the professorship at the Massachusetts Institute of Technology, recently formed to manage the school. His initial goal was to determine how his background in science, engineering and can be accessed through the impasse, in a useful way for some, the key issues that determine the success or failure of companies. Forrester 's light on the common ground upon which the engineering and management, which led to the establishment of a system of dynamics, were to a large extent, through its involvement with managers at General Electric in the mid-1950s. At that time, GE managers wiser because of local employment and plants at their meeting in the state of Kentucky introduced a large three-year cycle. Business cycle and the sentence is not enough to explain the instability of employment. At the same time simulation (or accounts) stripped of the flow of information between the structure of General Electric factories, companies, including decision-making structure of employment and layoffs, Forrester was able to show how the stability of employment in General Electric and was scheduled internal organizational structure of the company , And not an outside force such as the business cycle. Simulating That was the beginning of the field dynamics of the system.
What is Net?
Microsoft. Net framework of the software technology that is available with several operating systems and Microsoft Windows. The vast library of coded solutions to the problems of joint programming and implementation of virtual machine runs programs written specifically for the framework. Net framework, Microsoft is the key to progress and is intended to be used by most new applications created for the Windows platform.
Pre-coded solutions that form the base class library cover a wide range of programming needs in a number of areas, including user interface, data access and database connectivity, cryptography, and the development of Web applications, digital algorithms, and network communications. The class library is used by programmers, who gathered with their own code to produce applications.
Programs written for. Net framework of the implementation of environment in the software, which runs at the time of operating requirements. Also part of the Net framework, and this time operating environment is known as the common language run time (CLR). The CLR provides the emergence of virtual machine requested so that programmers need not consider the specific capabilities of the CPU program to be implemented. The CLR also provides other important services such as security, memory management and addressing the exception. CLR class library and make up together. Net framework.
Version 3.0 of the net framework included with Windows Server 2008 and Windows Vista. The current version of the framework can also be installed on Windows XP and Windows Server 2003 family of operating systems. [2] and there is a decrease, "the Charter" a copy of the net framework is also available on Windows Mobile platforms, including smart phones.
Microsoft. Net framework of the software technology that is available with several operating systems and Microsoft Windows. The vast library of coded solutions to the problems of joint programming and implementation of virtual machine runs programs written specifically for the framework. Net framework, Microsoft is the key to progress and is intended to be used by most new applications created for the Windows platform.
Pre-coded solutions that form the base class library cover a wide range of programming needs in a number of areas, including user interface, data access and database connectivity, cryptography, and the development of Web applications, digital algorithms, and network communications. The class library is used by programmers, who gathered with their own code to produce applications.
Programs written for. Net framework of the implementation of environment in the software, which runs at the time of operating requirements. Also part of the Net framework, and this time operating environment is known as the common language run time (CLR). The CLR provides the emergence of virtual machine requested so that programmers need not consider the specific capabilities of the CPU program to be implemented. The CLR also provides other important services such as security, memory management and addressing the exception. CLR class library and make up together. Net framework.
Version 3.0 of the net framework included with Windows Server 2008 and Windows Vista. The current version of the framework can also be installed on Windows XP and Windows Server 2003 family of operating systems. [2] and there is a decrease, "the Charter" a copy of the net framework is also available on Windows Mobile platforms, including smart phones.