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  • Enterprise Application Integration (EAI)

    Introduction to the EAI concept The purpose of EAI (Enterprise Application Integration) is the interoperability and organization of the flow of information between heterogeneous applications, i.e. ensure communcation between the... Read more

    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
  • 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
  • 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
  • Sound card

    Introduction to sound cards Sound card connectors Introduction to sound cards The sound card (also called an audio card) is the part of a computer which manages its audio input and ouput. It is usually a controller which can be... Read more

    November 7, 2012 at 08:29 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
  • Representation of real numbers and integers

    Representing a number in a computer Representing (or encoding) a number means to express it in binary form. Representing numbers in a computer is necessary in order for it to be able to store and manipulate them. However, the problem is... Read more

    October 16, 2008 at 09:43 AM
  • 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
  • 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
  • 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
  • Quality Organization

    Quality Organization Establishing a quality procedure is a comprehensive business project that requires the participation of all employees. Therefore, it is necessary to define a "quality organization" that fits into and hinges on the... Read more

    November 12, 2012 at 03:20 PM
  • 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
  • Operating Systems - MS-DOS - Commands

    Command Description dir lists the contents of a folder cd changes folder cd .. parent folder md or mkdir creates a new folder deltree deletes a folder and all sub-folders copy, xcopy copies a file move moves a file del deletes a file... Read more

    MS Dos
    October 16, 2008 at 09:43 AM
  • Leased lines (T1, T2, T3)

    Leased lines "Leased" lines enable transmission of data at medium and high speeds (64 Kbps to 140 Mbps) by point to point or multipoint connection (Transfix service). In Europe, there are five types of lines distinguished according to... Read more

    Internet Technologies
    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

    October 16, 2008 at 09:43 AM
  • Office Automation - Introduction

    What is office automation? Office suite tools What is office automation? The term office automation refers to all tools and methods that are applied to office activities which make it possible to process written, visual, and sound data... Read more

    Office software
    March 15, 2018 at 03:53 PM
  • 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
  • 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
  • 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
  • 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