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  • Style classes (CSS)

    Classes and IDs Classes A web designer might want to assign different styles to the same tags. For this reason, the CSS specifications introduced the concept of classes. The definition of classes is as simple as that of styles. It... Read more

    CSS
    October 16, 2008 at 09:43 AM
  • OOP - Inheritance

    The concept of inheritance Inheritance is specific to object-oriented programming, where a new class is created from an existing class. Inheritance (often referred to as subclasses) comes from the fact that the subclass (the newly... Read more

    Object-Oriented Programming
    October 16, 2008 at 09:43 AM
  • 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,... Read more

    Spreadsheet
    October 16, 2008 at 09:43 AM
  • The GSM standard

    Introduction to the GSM standard The GSM (Global System for Mobile communications) network is, at the start of the 21st century, the most commonly used mobile telephony standard in Europe. It is a so-called "second generation" (2G)... Read more

    Mobile phones
    October 16, 2008 at 09:43 AM
  • Data transmission - Cabling

    Cabling types Coaxial cable Transceiver: the connection between Thinnet and Thicknet Coaxial cable connectors Twisted pair cabling Unshielded Twisted Pair (UTP) Shielded Twisted Pair (STP) Twisted pair connectors Fibre optics Cabling... Read more

    Data transmission
    November 7, 2012 at 08:25 AM
  • WPAN (Wireless Personal Area Network)

    Wireless Personal Area Networks (WPAN) A wireless personal area network (WPAN for short) is a low-range wireless network which covers an area of only a few dozen metres. This sort of network is generally used for linking peripheral... Read more

    Wireless
    March 5, 2018 at 03:55 AM
  • AGP bus

    Introduction to the AGP bus The AGP bus (short for Accelerated Graphics Port) was released in May 1997 for Slot One chipsets, then was later released for Super 7 chips in order to manage graphical data flow, which had grown to large to... Read more

    Computer
    April 28, 2009 at 10:38 AM
  • PNG format

    PNG format The PNG format (Portable Network Graphics or Ping format) is a bitmap (raster) graphic file format. It was developed in 1995 in order to provide a free alternative to the GIF format, which is a proprietary format whose rights... Read more

    Video
    October 16, 2008 at 09:43 AM
  • Linking two PCs with a null modem cable

    Linking two computers without network cards The best way to link two computers is to use an RJ45 cable to connect the machines' network cards. However, when one or both of the computers has no network card, there is still a fairly easy... Read more

    Cables and connectors
    October 16, 2008 at 09:43 AM
  • Network cards

    What is a network card? What is the role of a network card? Preparing data The role of the identifier Other network card functions Sending and controlling data Network card configuration settings What is a network card? A network card... Read more

    Computer
    November 7, 2012 at 08:19 AM
  • ISO 9000, ISO 9001 and ISO 9004

    Introduction to ISO Certification Certification is a way to attest, by the intermediary of a third-party certifier, to a company's ability to provide a service, product or system in accordance with client requirements and regulation... Read more

    Quality
    October 16, 2008 at 09:43 AM
  • Introduction to IT Security

    As Internet use is developing, more and more companies are opening their information system to their partners and suppliers. Therefore, it is essential to know which of the company's resources need protecting and to control system... Read more

    Security
    February 22, 2018 at 10:09 AM
  • Cathode Ray Tube monitor (CRT)

    Cathode ray tube monitor Most monitors (computer screens) use cathode ray tubes (or CRT for short), which are glass vacuum tubes into which an electron gun emits a flow of electrons guided by an electrical field towards a screen covered... Read more

    Computer
    April 28, 2009 at 10:40 AM
  • Data transmission - Multiplexing

    Introduction to multiplexing Multiplexing refers to the ability to transmit data coming from several pairs of equipment (transmitters and receivers) called low-speed channels on a single physical medium (called the high-speed channel). ... Read more

    Data transmission
    October 16, 2008 at 09:43 AM
  • Network tests and diagnostics

    Testing the IP configuration Before doing anything else, you are advised to check the computer's IP configuration. Windows systems offer a command-line tool, called ipconfig, that lets you find out your computer's IP configuration. The... Read more

    Network configuration
    October 16, 2008 at 09:43 AM
  • Employee Relationship Management (ERM)

    The term "Employee Relationship Management" (acronym ERM), translate as "management of the relationship with the employees" refers to the use of technologies in the management of human resources. This concept is based on client... Read more

    e-Business
    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),... Read more

    Computer history
    October 16, 2008 at 09:43 AM
  • TCP protocol

    The characteristics of TCP protocol TCP (which means Transmission Control Protocol) is one of the main protocols of the transport layer of the TCP/IP model. It makes it possible, at application level, to manage data coming from (or... Read more

    Internet (protocols)
    October 16, 2008 at 09:43 AM
  • zlclient - zlclient.exe

    zlclient - zlclient.exe zlclient.exe (zlclient stands for Zone Labs Client) is a process which corresponds to the firewall ZoneAlarm. It is an application which can safely be terminated. However, it is recommended that you not do so, in... Read more

    Windows processes
    October 16, 2008 at 09:43 AM
  • Client / Contractor

    Contractor and Client * ==Client== The client refers to the entity that has the need that defines the project objective, schedule, and dedicated budget. The expected result of the project is the creation of a product, called works. The... Read more

    Project management
    March 15, 2018 at 03:41 PM