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  • OOP - Data encapsulation

    The concept of encapsulation Encapsulation is a way of organizing data and methods into a structure by concealing the the way the object is implemented, i.e. preventing access to data by any means other than those specified. Encapsulation ... Read more

    Object-Oriented Programming
    October 16, 2008 at 09:43 AM
  • Connecting several computers to a network on Windows

    Networking on Windows 2000/XP In order to configure each computer, you need only go to the control panel, then double-click on "network connections", and then right-click "local network connection", and select properties! The various ... Read more

    Practical notes
    October 16, 2008 at 09:43 AM
  • msconfig - msconfig.exe

    msconfig - msconfig.exe msconfig.exe (msconfig) is a standard process in Windows XP (and earlier versions of Windows) for editing the startup configuration. MsConfig is mainly used for removing processes loaded when Windows is booted. How ... Read more

    Windows processes
    October 16, 2008 at 09:43 AM
  • Quality Organization

    Quality Organization Establishing a quality procedure is a comprehensive business project that requires the participation of all employees. Therefore, it is necessary to define a "quality organization" that fits into and hinges on the ... Read more

    Quality
    November 12, 2012 at 03:20 PM
  • Spreadsheets - Data Entry

    Cell Content A cell of a worksheet can contain a value or be empty. The value of a cell has two essential characteristics: a type, which means the intrinsic type of the data. There are generally three types of values: numeric values, for ... Read more

    Spreadsheet
    October 16, 2008 at 09:43 AM
  • Data transmission - Analogue transmission

    The principles of analogue transmission Analogue data transmission consists of sending information over a physical transmission medium in the form of a wave. Data is transmitted via a carrier wave, a simple wave whose only purpose is to ... Read more

    Data transmission
    October 16, 2008 at 09:43 AM
  • Intranet - Installing a mail server

    Introduction to installation The most commonly used e-mail server in Linux is Sendmail; however, as it is very hard to configure, we will use Qmail, an alternative e-mail server, instead. Qmail is made up of a group of programs that work ... Read more

    Intranet
    October 16, 2008 at 09:43 AM
  • MKV format (Matroska Video)

    MKV format The MKV format (Matroska Video) is an entirely free video format. More precisely, it is a container (hence the name Matroska, in reference to the Russian dolls contained within another) making it possible to contain video (DivX, ... Read more

    Video
    October 16, 2008 at 09:43 AM
  • Propagation of Radio Waves (802.11)

    Propagation of Radio Waves In order to be able to install a wireless network, and in particular to place the access points so as to get the best range possible, a little background should be given on how radio waves propagate. Radio waves ... Read more

    Wireless
    October 16, 2008 at 09:43 AM
  • Smileys (emoticons)

    Why smileys? When typing words on the Internet, it's not always easy to convey feelings, emotions, or concepts like humor to the people you're communicating with. Here's a simple tip for getting the right message across: Use ASCII ... Read more

    World Wide Web
    October 16, 2008 at 09:43 AM
  • Peer-to-peer networking

    Introduction to peer-to-peer architecture In contrast to client-server networks there is no dedicated server in peer-to-peer architecture . Thus each computer in such a network is part server and part client. This means that each computer ... Read more

    Client/Server
    November 12, 2012 at 12:43 PM
  • CD, CD audio and CD-ROM

    The Compact Disc was invented by Sony and Philips in 1981 in order to serve as a high-quality compact audio storage device which allowed for direct access to digital sound tracks. It was officially launched in October 1982. In 1984, the ... Read more

    Computer
    October 7, 2012 at 02:35 PM
  • The Printer

    Printers Characteristics Daisy Wheel Printer Dot-Matrix Printer Inkjet Printer and Bubble Jet Printer Laser Printer LED Printer Printer Command Language Print Servers Printers The printer is a peripheral that allows you to make a print-out ... Read more

    Computer
    November 7, 2012 at 08:26 AM
  • OOP - Polymorphism

    Definition of polymorphism The word polymorphism comes from Greek and means having several different forms. This is one of the essential concepts of object-oriented programming. Where inheritance is related to classes and (their hierarchy ... Read more

    Object-Oriented Programming
    October 16, 2008 at 09:43 AM
  • History of the hard drive

    History of the hard drive The first hard drive was invented in early 1956, at the request of the US Air Force, by the company IBM. It was called the RAMAC 305 (with the name standing for Random Access Method of Accounting and Control), a ... Read more

    Computer history
    October 16, 2008 at 09:43 AM
  • Hard drive

    The role of the hard drive Structure How it works Block mode 32-bit mode Technical specifications The role of the hard drive The hard drive is the component which is used to permanently store data, as opposed to RAM, which is erased ... Read more

    Computer
    November 7, 2012 at 09:23 AM
  • The Scanner

    The Scanner A scanner is an acquisition peripheral for scanning documents, i.e. converting a paper document to a digital image. There are generally three types of scanner: Flat scanners let you scan a document by placing it flat against a ... Read more

    Computer
    October 16, 2008 at 09:43 AM
  • Environment variables

    Environment variables An environment variable is a dynamic value loaded into the memory that can be used by several processes operating simultaneously. On most operating systems, the location of some libraries or of the main system ... Read more

    Operating System
    October 16, 2008 at 09:43 AM
  • Network equipment - Bridges

    Bridges A bridge is a hardware device for linking two networks that work with the same protocol. Unlike a repeater, which works at the physical level, a bridge works at the logical level (on layer 2 in the OSI model), which means that it ... Read more

    Local Area Network
    October 16, 2008 at 09:43 AM
  • Information security officer (ISO)

    Information security officer (ISO) An ISO (information security officer) is in charge of setting and a company's security policy. He/she also plays a critical role in informing, advising, and alerting the general management on matters ... Read more

    IT professions
    October 16, 2008 at 09:43 AM