computador portátil
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Laptop, notebook or laptop

#Laptop #notebook #laptop A portable computer (laptop or notebook) today has processing and storage capacities close to desktops, which ensures high-tech multimedia functions (DVD reading, video games, 3D image processing, etc.). If, on the one hand, its price is higher than a fixed computer, on the other, its use is more varied as it can […]

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Cables and connectors in computing

#Cables #connectors #computing Learn how to identify a connector, pin, and input and output connectors used in computing. What is a connector How are the pins in computing What is the characteristic of the input / output connectors What is a connector Computer connectors, called input / output connectors (I / O or, in English, […]

The IP protocol
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The IP protocol

#protocol What is and what the function of the IP protocol What is a datagram How the datagram appears What do the fields in the IP protocol mean Why the IP datagram is fragmented How IP encryption is done What is and what the function of the IP protocol The protocol IP (Internet Protocol and, […]

Schéma d
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Front Office and Back Office

#Front #Office #Office What are Front Office and Back Office Front Office Back Office Partitioning What are Front Office and Back Office The terms Front Office (in front) and Back Office (behind the scenes) serve to describe the parts of the company (or its information system) dedicated, respectively, to the direct relationship with the customer […]

Ligação simplex
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Data transmission modes

#Data #transmission #modes How data circulates with simplex, half-duplex and full-duplex connections How serial and parallel transmissions are made How parallel connection works How a serial link is created Synchronous and asynchronous transmission For transmission between two machines, communication can be carried out in different ways. It is characterized by sense of exchanges, how exchanges […]

Interior do mouse
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What is the mouse

#mouse Mouse history Mouse Connector Types of mice Mechanical mouse Optical mouse Wireless mice Mouse with scroll Mouse history The mouse is a pointing device (in English, pointing device) that serves to move a cursor on the screen, allowing to select, move and manipulate objects thanks to buttons. It’s called click, the action of pressing […]

nota
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Style classes (CSS)

#Style #classes #CSS Classes and IDs The classes Calling a class The universal classes Pseudoclasses Dynamic pseudo-classes Link pseudoclasses The descending pseudo-class Text pseudoclasses Pseudoclasses of language The page pseudoclasses The ID selectors Classes and IDs The classes It may be interesting to assign different styles to the same tags. For this, the CSS specifications […]

TCP / IP ports
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TCP / IP ports

#TCP #ports What is the use of doors How Multiplex and Demultiplex Circuits Work What are the standards and list of TCP / IP ports List of most used ports and services Several TCP / IP (Transmission Control Protocol / Internet Protocol) programs can be run simultaneously on the Internet (eg it is possible to […]

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OOP – Polymorphism

#OOP #Polymorphism Polymorphism definition The ad hoc polymorphism Parametric polymorphism Inclusion polymorphism Polymorphism definition The word polymorphism comes from the Greek and means that which can take various forms. This characteristic is one of the essential concepts of object oriented programming (OOP). While inheritance refers to classes and their hierarchy, polymorphism concerns object methods. There […]

Esquema MTA-MDA-MUA
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What email is and what it is for

#email Although it seems simple, e-mail (electronic mail) is more complicated than the internet. For most users, its operation is transparent, which means that it is not necessary to understand how it works in order to use it. However, this brief article on the use of e-mail allows us to understand the principle and the […]

teoria da ação
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The ergonomics of a website

#ergonomics #website What is ergonomics and usability Adapt a product to the psychological and physical characteristics of man How to consider human senses in ergonomics What are the ergonomics criteria for a website What is ergonomics and usability THE ergonomics it is the use of scientific knowledge related to man (psychology, physiology and medicine) in […]

Tempo d
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Computer memory

#Computer #memory What is and what is the function of memory Technical characteristics What types of memories and what are they for RAM ROM Flash memory What is and what is the function of memory It’s called memory any electronic component capable of storing data temporarily. There are two broad categories of memories: THE central […]