Appareil mobile

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Mobile devices are dynamic tools that offer a broad spectrum of functionalities and applications across various industries. Defined by their portability, these devices range in size from pocket-friendly gadgets to larger equipment. Their physical aspects, including dimension and weight, allow for easy attachment to different host devices and mobility across diverse settings. Despite their portability, wireless connectivity is not a prerequisite. Mobile devices can access networks through both wired and wireless connections, and some even operate without Internet[1] connectivity. They are integral in numerous industries, providing solutions for field management, real-time conferencing, asset tracking, and more. However, their application in sectors such as gambling and adult entertainment has prompted regulatory scrutiny. Additionally, they are increasingly used in military operations for training and educational purposes.

Définitions des termes
1. Internet. L'internet est un système mondial de réseaux informatiques interconnectés qui utilisent des protocoles de communication normalisés, principalement le TCP/IP, pour relier des appareils dans le monde entier. Issu du terme "internetted" utilisé en 1849, le terme "Internet" a ensuite été utilisé par le ministère américain de la guerre en 1945. Son développement a commencé avec des informaticiens qui ont créé des systèmes de partage de temps dans les années 1960 et a progressé avec la création d'ARPANET en 1969. L'internet est autogéré, sans autorité centrale, et ses principaux espaces de noms sont administrés par l'Internet Corporation for Assigned Names and Numbers (ICANN). Il a considérablement transformé les moyens de communication traditionnels et s'est développé de manière exponentielle au fil des ans, le nombre d'internautes augmentant de 20% à 50% par an. En 2019, plus de la moitié de la population mondiale utilisait l'internet. La suite de protocoles internet, qui comprend le protocole TCP/IP et quatre couches conceptuelles, guide les paquets internet jusqu'à leur destination. Des services essentiels comme le courrier électronique et la téléphonie par internet fonctionnent sur l'internet. Le World Wide Web, une collection mondiale de documents interconnectés, est un élément clé de l'internet.
Appareil mobile (Wikipedia)

A mobile device (ou handheld computer), also referred to as a digital assistant (ou DA), is a computer small enough to hold and operate in the hand. Mobile devices typically have a flat LCD ou OLED screen, a touchscreen interface, and digital or physical buttons. They may also have a physical keyboard. Many mobile devices can connect to the Internet and connect with other devices, such as car entertainment systems or headsets, via Wi-Fi, Bluetooth, cellular networks, or near-field communication. Integrated cameras, the ability to place and receive voice and video telephone calls, video games, and Global Positioning System (GPS) capabilities are common. Power is typically provided by a lithium-ion battery. Mobile devices may run mobile operating systems that allow third-party applications to be installed and run.

An iPhone smartphone and iPad tablet—two examples of mobile devices

Early smartphones were joined in the late 2000s by larger tablets. Input and output are usually via a touchscreen interface. Phones/tablets and personal digital assistants may provide much of the functionality of a laptop/desktop computer in addition to exclusive features. Enterprise digital assistants can provide additional business functionality, such as integrated data capture via code-barres, RFIDet smart card readers.

By 2010, mobile devices often contained sensors such as accelerometers, magnetometers et gyroscopes, allowing the detection of orientation and motion. Mobile devices may provide biometric user authentication, such as face recognition or fingerprint recognition.

Some of the major global manufacturers of mobile devices include Pomme, Samsung, Xiaomi, Oppo, Vivo, Huawei, Realme, Motorola et OnePlus, cash app account

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