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  • Introduction to e-Commerce (Electronic Commerce)

    The term Electronic commerce (or e-Commerce) refers to the use of an electronic medium to carry out commercial transactions. Most of the time, it refers to the sale of products via Internet, but the term eCommerce also covers purchasing... Read more

    July 10, 2018 at 06:07 AM
  • HTML document layout

    HTML document An HTML page is a simple file containing text formatted with HTML tags. Traditionally, the file is given an .htm or .html extension, but a web page may have other extensions as well. A web page can be built from even the... Read more

    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

    November 12, 2012 at 02:13 PM
  • NAT- Network address translation, port forwarding and port trigg

    The principle of NAT Network address translation or NAT was developed in order to respond to the shortage of IP addresses with IPv4 protocol (in time the IPv6 protocol will respond to this problem). In fact, in IPv4 addressing the... Read more

    Internet (protocols)
    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
  • Introduction to Wi-Fi (802.11 or WiFi)

    Introduction to Wi-Fi (802.11) The IEEE 802.11 specification (ISO/IEC 8802-11) is an international standard describing the characteristics of a wireless local area network (WLAN). The name Wi-Fi (short for "Wireless Fidelity", sometimes... Read more

    October 16, 2008 at 09:43 AM
  • The HTTP protocol

    Introduction to the HTTP protocol Since 1990 HTTP protocol (HyperText Transfer Protocol) has been the most widely used protocol on the Internet. Version 0.9 was only intended to transfer data over the Internet (in particular Web pages... Read more

    Internet (protocols)
    October 16, 2008 at 09:43 AM
  • Processor

    Introduction Operation Instructions Registers Cache Memory Control Signals Functional Units Transistor Integrated Circuits Families Instruction Set CISC Architecture RISC Architecture Technological Improvements Parallel Processing... Read more

    August 21, 2013 at 12:56 AM
  • Connecting the computer to a HIFI sound system

    Why connect a computer to a sound system? These days, computers provide sound quality that is as good as hifi sound systems. It is possible to use them to listen to music, in particular thanks to mp3 files that provide sound quality... Read more

    Practical notes
    October 16, 2008 at 09:43 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

    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
  • Agile Methods (RAD, XP)

    Agile methods "Agile methods" software development (also called Agile Modelling denoted AG for short) reduce software lifecycle time (thus speeding up development) by firstly developing a prototype version, then integrating... Read more

    Software engineering
    October 16, 2008 at 09:43 AM
  • Spreadsheets - Worksheets

    The Concept of a Worksheet Spreadsheets display data and formulas in a table form (lines and columns) called a worksheet. A worksheet is made of lines (numbered with numbers) and of columns (numbered with letters). The intersection of a... Read more

    October 16, 2008 at 09:43 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

    March 5, 2018 at 03:55 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

    November 1, 2012 at 04:17 PM
  • Serial Port and Parallel port

    Every computer is built with tons of different ports that perform various functions. Two of the most important types for data trans are serial ports and parallel ports. This article will explain to you the differences and similarities... Read more

    June 22, 2018 at 01:09 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

    October 16, 2008 at 09:43 AM
  • Introduction to Encryption with DES

    On May 15, 1973, the NBS (National Bureau of Standards, now called NIST (National Institute of Standards and Technology) published a request in the Federal Register for an encryption algorithm that would meet the following criteria:... Read more

    June 19, 2018 at 07:09 PM
  • 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

    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

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