• eXtensible Markup Language (XML)

    XML stands for eXtensible Markup Language.

    It is a way of organizing text and/or contents with tags. Tags look like this:

    <sometag>some content</sometag>

    Of course, although possible, this is not designed to be read by humans. It is designed to be processed by machines. Typically one program generates an XML document and another one computes it to some further extent.

    And XML document very much looks like an HTML document, except that the tags are different.

    There are actually many different dialects of XML, each for a different purpose. Each of these dialects has its own tags. And even more tags can be added. Hence the "eXtensible" in the name.

    There is an XML dialect for writing web pages. It is called XHTML. It is basically the same thing as HTML except for minor syntaxic differences. For example in HYML you would write <BR> whereas in XML you would write <br />.

    Other XML dialects include RSS and Atom.

  • TIFF

    The Tagged Image File Format (TIFF) is a non compressed bitmap image format, typically produced by scanners.

    TIFF images typically include tags defining the characteristics of the image that is included in the file.

  • BIT Depth

    The Bit depth describes the number of bits used to represent the color of a single pixel in a bitmapped image. Higher color depth gives a broader range of distinct colors. As the number of bits increases, the number of possible colors becomes impractically large for a color map.

    1-bit color is commonly called as monochrome or black & white.

  • WPA-PSK

    WPA-PSK (WPA Pre-Shared Key) is special mode of WPA for small business or home users.

    A shared key, or password, is configured in the wireless access point (WAP) and any wireless laptop or desktop devices. WPA-PSK generates a unique key for each session between a wireless client and the associated WAP for more advanced security.

  • Lightweight Directory Acess Protocol (LDAP)

    Lightweight Directory Access Protocol (LDAP) is an networking protocol for querying and modifying directory services running over TCP/IP.

    Is is often use to verify a login/username against a central directory to allow/reject login and then maybe obtain more detailed information on the user (firstname, lastname, etc.)

  • File Transfer Protocol (FTP)

    FTP is a protocol for transferring files over TCP/IP networks such as the Internet.

    To transfer files, you need to connect to an FTP server with some FTP client software.

    FTP can be used to transfer very large files, especially files that are too large to be sent via email. However, the need for a server to exchange files with someone else makes this less practical than email.

    FTP is also commonly used to upload web pages and web applications to web sites. Most web servers also feature an FTP server.

    Some commonly use FTP clients are:

    • Windows: FileZilla
    • Mac: CyberDuck, Transmit
    • Unix: ftp command
  • Halftone

    An image type that simulates grayscale by varying the density of dots in a given area.

    Highly colored areas consist of a large density of dots, while lighter areas consist of a lower density of dots.

  • BMP

    A bitmapped image format used internally by the Microsoft Windows graphics subsystem (GDI), and used commonly as a simple graphics file format on Windows.

  • Fuser Unit

    The part of a laser printer that melts the toner onto the print media. It consists of a hot roller and a back-up roller. After toner is transferred onto the paper, the fuser unit applies heat and pressure to ensure that the toner stays on the paper permanently.

    This is why paper is warm when it comes out of a laser printer.

  • Grayscale

    Shades of gray that represent light and dark portions of an image.

    When color images are converted to grayscale; colors are represented by various shades of gray depending on their brightness.