All categories
Results 121 - 151 of about 578
  • Data transmission - Analogue transmission

    The principles of analogue transmission Analogue data transmission consists of sending information over a physical transmission medium in the form of a wave. Data is transmitted via a carrier wave, a simple wave whose only purpose is to ... Read more

    Data transmission
    October 16, 2008 at 09:43 AM
  • Operating system

    Description of the operating system Roles of the operating system Components of the operating system Multi-threaded systems Multi-processor systems Embedded systems Real time systems Types of operating system Description of the operating ... Read more

    Operating System
    November 11, 2012 at 06:40 PM
  • Copyright Information

    Legal Notice Creative Commons Deed CCM's Creative Commons License Deed V3.0 Attribution - NonCommercial - ShareAlike 3.0 France You are free: to copy, distribute, display, and perform the work to make derivative works Under the following ... Read more

    Terms of Use
    June 13, 2016 at 11:37 AM
  • Computer - History

    The history of the computer owes its existence to the fact that people, who are lazy by nature, have always sought to improve their ability to calculate, in order to reduce errors and save time. Origins: The abacus The "abacus" was ... Read more

    Computer history
    October 16, 2008 at 09:43 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 hierarchy ... Read more

    Object-Oriented Programming
    October 16, 2008 at 09:43 AM
  • Establishing a Quality Procedure

    Establishing a Quality Procedure Improving quality (reducing bad quality and improving work processes) in a company requires reflection by both the management and all the employees in order to define the reachable goals in terms of quality ... Read more

    October 16, 2008 at 09:43 AM
  • Using Telnet

    Introduction to Telnet Protocols and implementation Running Telnet Commands in Telnet Introduction to Telnet Telnet is a protocol for emulating a remote terminal, which means that it can be used to run commands entered on a keyboard at a ... Read more

    Internet Utilities
    November 12, 2012 at 12:39 PM
  • Session keys

    Advantages of a session key Asymmetric algorithms (which come into play in public-key cryptosystems) make it possible to eliminate problems related to key sharing via a secure channel. However, they remain much less effective (in terms of ... Read more

    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). Despite ... Read more

    April 24, 2009 at 06:55 AM
  • Preparatory phase of a project

    The preparatory phase The term preliminary project is generally used to refer to all preparatory stages necessary for the launch of the project. Thus, the idea is to precisely define the nature of the project in order to finalize the ... Read more

    Project management
    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
  • Introduction to attacks

    Introduction to attacks Any computer connected to a computing network is potentially vulnerable to an attack. An "attack" is the exploitation of a flaw in a computing system (operating system, software program or user system) for purposes ... Read more

    October 16, 2008 at 09:43 AM
  • Introduction to power line communications (PLC)

    Introduction to PLC "Power Line Communications" basically means any technology that enables data transfer at narrow or broad band speeds through power lines by using advanced modulation technology. Depending on the country, the institution ... Read more

    Power Line Communications
    October 16, 2008 at 09:43 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 involves ... Read more

    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 functionality ... Read more

    Software engineering
    October 16, 2008 at 09:43 AM
  • Messaging protocols (SMTP,POP3 and IMAP4)

    Introduction to e-mail E-mail is considered as being the most widely used service on the Internet. So the TCP/IP protocol suite offers a range of protocols allowing the easy management of email routing over the network. The SMTP protocol ... Read more

    Internet (protocols)
    October 16, 2008 at 09:43 AM
  • Proxy and reverse proxy servers

    Proxy servers A proxy server is a machine which acts as an intermediary between the computers of a local area network (sometimes using protocols other than TCP/IP) and the Internet Most of the time the proxy server is used for the web, and ... Read more

    Local Area Network
    October 16, 2008 at 09:43 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 characterised ... Read more

    October 16, 2008 at 09:43 AM
  • Execution phase of a project

    Execution phase Preparation Before beginning the execution of the work, it is necessary to take the time to break the project down into tasks in order to plan the performance of these tasks and determine what resources need to be mobilized ... Read more

    Project management
    October 16, 2008 at 09:43 AM
  • Introduction to UNIX systems

    The UNIX system The Unix system is a multi-user, multi tasking operating system which means that it allows a single or multiprocessor computer to simultaneously execute several programs by one or several users. It has one or several ... Read more

    October 16, 2008 at 09:43 AM