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  • Spreadsheets - Mathematical Functions

    Standard Functions Function Description ABS() This function returns the absolute value of a number. It therefore returns the number, if it is positive, or the opposite (positive) if it is negative ODD(value) Rounds a number up to the... Read more

    Spreadsheet
    October 16, 2008 at 09:43 AM
  • 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... Read more

    Computer
    November 7, 2012 at 08:26 AM
  • Information systems governance (IT Governance)

    The Concept of Governance The term "Governance" specifies the ability of an organization to be able to control and regulate its own operation so as to avoid conflicts of interest related to the division between beneficiaries... Read more

    Information System
    October 16, 2008 at 09:43 AM
  • WiMAX - 802.16 - Worldwide Interoperability for Microwave Access

    What is WiMAX ? WiMAX is short for Worldwide Interoperability for Microwave Access. It is a metropolitan wireless standard created by the companies Intel and Alvarion in 2002 and ratified by the IEEE (Institute of Electrical and... Read more

    Wimax
    October 16, 2008 at 09:43 AM
  • Dolby Digital / AC3

    Introduction to the Dolby Digital format Dolby Digital EX Dolby Headphone Introduction to the Dolby Digital format Launched in 1987, the Dolby Digital format is a digital audio encoding standard developed by Dolby Labs. Unlike Dolby... Read more

    Audio
    November 12, 2012 at 02:13 PM
  • 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

    Computer
    October 16, 2008 at 09:43 AM
  • DB25 connector

    DB25 plugs The DB25 (originally DE-25) connector is an analog 25-pin plug of the D-Subminiature connector family (D-Sub or Sub-D). As with the DB9 connector, the DB25 is mainly used for serial connections, allowing for the asynchronous... Read more

    Cables and connectors
    October 16, 2008 at 09:43 AM
  • FAT16 and FAT32

    The FAT16 file system The first file system to be used on a Microsoft operating system was the FAT system, which uses a file allocation table. The file allocation table is actually an index which lists the content of the disk in order... Read more

    Computer: maintenance
    October 16, 2008 at 09:43 AM
  • Programming Languages

    A programming language is a language designed to describe a set of consecutive actions to be executed by a computer. A programming language is, therefore, a practical way for us humans to give instructions to a computer. Languages that... Read more

    Programming
    June 19, 2018 at 06:40 PM
  • Information systems director (ISD)

    Information systems director (ISD) An information systems director (also called an IS director) has both managing and technical skills. He/she is in charge of bringing information systems in line with the company's plans, setting and... Read more

    IT professions
    October 16, 2008 at 09:43 AM
  • 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 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... Read more

    Computer
    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
  • Modem

    A quick history of the modem The first coding to enable long distance communication was Morse, which was developed by Samuel F.B Morse in 1844. This code is made up of dots and dashes (a sort of binary language...) and made it possible... Read more

    Internet Technologies
    October 16, 2008 at 09:43 AM
  • Webmastering - Website Ergonomics

    The Concept of Ergonomics Ergonomics is the use of scientific knowledge about humans (psychology, physiology, medicine) with the aim of improving the workplace environment. Ergonomics is generally characterized by two components:... Read more

    Webmastering
    October 16, 2008 at 09:43 AM
  • Introduction to Microsoft Windows

    History of Windows Windows is the operating system sold by the Seattle-based company Microsoft. Microsoft, originally christened "Traf-O-Data" in 1972, was renamed "Micro-soft" in November 1975, then "Microsoft" on November 26, 1976.... Read more

    Windows
    March 8, 2018 at 09:54 AM
  • Computer screen or monitor

    Introduction to computer monitors A monitor (or screen) is a computer display unit. There are generally said to be two families of monitors: Cathode-ray tube monitors (or CRT for short), which are used with most desktop computers. They... Read more

    Computer
    November 1, 2012 at 04:17 PM
  • 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

    Computer
    April 24, 2009 at 06:55 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... Read more

    Object-Oriented Programming
    October 16, 2008 at 09:43 AM
  • Creating a LAN

    Why set up a LAN? If you have several computers, it may be worthwhile to connect them in order to create a local area network (LAN). Setting up such a network is much less expensive than what you might think. Here are a few ways you... Read more

    Practical notes
    October 16, 2008 at 09:43 AM