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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 SystemOctober 16, 2008 at 09:43 AM -
CCM - Who We Are
Welcome to CCM! We are the number one tech website in France (CommentCaMarche.net). Every day, millions of users around the world read our news, tips, reviews on downloads and participate in our forums. CCM stands for Comment Ça Marche,... Read more
About UsNovember 10, 2020 at 04:40 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 ProgrammingOctober 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 connectorsOctober 16, 2008 at 09:43 AM -
Cathode Ray Tube monitor (CRT)
Cathode ray tube monitor Most monitors (computer screens) use cathode ray tubes (or CRT for short), which are glass vacuum tubes into which an electron gun emits a flow of electrons guided by an electrical field towards a screen covered... Read more
ComputerApril 28, 2009 at 10:40 AM -
Data compression
Why compress data? Nowadays, the computing power of processors increases more quickly than storage capacities, and is much faster than network band-widths, because this requires enormous changes in the telecommunication infrastructures.... Read more
VideoOctober 16, 2008 at 09:43 AM -
Quoted-printable encoding
Quoted-printable encoding Quoted-printable encoding (somtimes QP) involves using US-ASCII 7-bits encoding (non-accented letters) to encode a text that requires an alphabet of 8-bit characters (accented letters), such as ISO-Latin-1,... Read more
EncodingFebruary 22, 2018 at 10:28 AM -
Installing a network adapter
Purpose The purpose of this article is to set up a network to enable data exchanges between computers, resource sharing and network games. Is it therefore necessary to install a network card in each computer that may be part of the... Read more
Network configurationOctober 16, 2008 at 09:43 AM -
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 professionsOctober 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 processesJune 22, 2018 at 01:06 AM -
Environment variables
Environment variables An environment variable is a dynamic value loaded into the memory that can be used by several processes operating simultaneously. On most operating systems, the location of some libraries or of the main system... Read more
Operating SystemOctober 16, 2008 at 09:43 AM -
Computer graphics
The field of the IT concerning the creation and the handling of digital images is called computer graphics. Computer graphics cover various areas of knowledge, including the representation of graphic elements (text, image or video), as... Read more
VideoOctober 16, 2008 at 09:43 AM -
PNG format
PNG format The PNG format (Portable Network Graphics or Ping format) is a bitmap (raster) graphic file format. It was developed in 1995 in order to provide a free alternative to the GIF format, which is a proprietary format whose rights... Read more
VideoOctober 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
WirelessMarch 5, 2018 at 03:55 AM -
Search Icon: Does Sherlock Holmes Have Something To Do With It?
The Search icon with the magnifying glass seems so familiar nowadays: almost every interface, every computer or web browser, any mobile device has it. However, have you ever thought of why and how it became the ultimate symbol of... Read more
Computer: maintenanceNovember 10, 2020 at 09:24 AM -
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
e-BusinessOctober 16, 2008 at 09:43 AM -
Messaging protocols (SMTP,POP3 and IMAP4)
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 The POP3 protocol The... Read more
Internet (protocols)April 16, 2018 at 11:47 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
SecurityFebruary 22, 2018 at 10:09 AM -
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
SpreadsheetOctober 16, 2008 at 09:43 AM