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  • Search Icon: Does Sherlock Holmes Have Something To Do With It?

    The Search icon with the magnifying glass seems so familiar nowadays: almost every interface, every computer or web browser, any mobile device has it. However, have you ever thought of why and how it became the ultimate symbol of... Read more

    Computer: maintenance
    November 10, 2020 at 09:24 AM
  • Computer - ISA, MCA and VLB Buses

    Expansion Bus Expansion buses (sometimes called peripheral buses) are buses that have connectors that allow you to add expansion cards (peripherals) to a computer. There are different types of standard internal buses that are... Read more

    October 16, 2008 at 09:43 AM
  • Creating an RJ45 crossover cable

    What's an RJ45 plug? A network card may have several types of connectors, with the most common being: An RJ45 connector; A BNC connector (coaxial cable). The RJ-45 is the one which interests us here, as it it the most widely used. The... Read more

    Cables and connectors
    October 16, 2008 at 09:43 AM
  • FTP commands

    The FTP protocol FTP (File Transfer Protocol) is a protocol — meaning a standard language that lets two machines communicate — used so that computers of different types (or with different operating systems) can transfer files over a... Read more

    Networking tools
    October 16, 2008 at 09:43 AM
  • ATA, IDE and EIDE

    Overview The ATA (Advanced Technology Attachment) standard is a standard interface that allows you to connect storage peripherals to PC computers. The ATA standard was developed on May 12, 1994 by the ANSI (document X3.221-1994).... Read more

    April 24, 2009 at 06:55 AM
  • Cmd (cmd.exe)

    Windows Command Prompt or cmd.exe is a Windows NT/2000/XP generic process that opens a text-mode console for running programs using a command line. This article will explain its use to you and show you how to use it on your computer.... Read more

    Windows processes
    June 22, 2018 at 01:06 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
  • CIE / Lab (L*a*b) coding

    CIE Coding Colors may be perceived differently depending on individuals and may be displayed differently depending on the peripheral display devices. The International Lighting Commission (Commission Internationale de l'Eclairage, CIE)... Read more

    May 11, 2011 at 04:59 PM
  • CCM - Who We Are

    Welcome to CCM! We are the number one tech website in France ( Every day, millions of users around the world read our news, tips, reviews on downloads and participate in our forums. CCM stands for Comment Ça Marche,... Read more

    About Us
    November 10, 2020 at 04:40 AM
  • 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

    October 16, 2008 at 09:43 AM
  • Declaring a style sheet (CSS)

    Declaring a style sheet Style sheets are not directly integrated into the W3C's HTML recommendations. For this reason, you need to include elements in the HTML code indicating both the type of document, meaning the version of the HTML... Read more

    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

    October 16, 2008 at 09:43 AM
  • Front Office and Back Office

    Front Office/Back Office The terms Front Office and Back Office are generally used to describe the parts of the company (or of its information system) that are dedicated, respectively, to the direct relationship with the client and... Read more

    October 16, 2008 at 09:43 AM
  • Routing over the Internet

    Routers Routers are devices which make it possible to "choose" the path that datagrams will take to arrive at the destination. They are machines with several network interface cards each one of which is linked to a different network.... Read more

    Internet (protocols)
    May 24, 2012 at 03:36 PM
  • The PC Card bus (PCMCIA)

    PC Card Bus Introduction The PC Card bus was developed in 1989 by the PCMCIA (Personal Computer Memory Card International Association, which is the name sometimes given to the bus) consortium in order to extend current peripheral... Read more

    April 24, 2009 at 06:55 AM
  • The Klez virus

    Introduction to the Klez virus Appearing early in 2002, the Klez virus is still everywhere on networks, and the danger it poses is even higher due to the new variations that keep cropping up (like Klez.e, Klez.g, Klez.h, Klez.i, Klez.k,... Read more

    Viruses and threats
    April 16, 2018 at 11:43 AM
  • Web - The browser

    Web browser A "browser" is a tool which lets Internet users visit their favorite websites. It is a kind of software with a graphical interface which includes navigation buttons, an address bar, and a status bar (generally below the... Read more

    World Wide Web
    October 16, 2008 at 09:43 AM
  • MS DOS Files and directories

    Files in MS DOS In a computers data is stored in files. When you run a program, MS-DOS processes the data stored in the file and passes it to the system. In MS-DOS a file can be any size, however the file name is more restricted, it can... Read more

    MS Dos
    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
  • VPN - Virtual Private Networks

    The concept of virtual private networks Operation of a VPN Tunneling protocols The PPTP protocol The L2TP protocol The IPSec protocol The concept of virtual private networks Local area networks (LANs) are the internal networks of... Read more

    Introduction to Networks
    November 12, 2012 at 12:44 PM

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