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Pour commencer à remplir la grille, déplacez le curseur sur la case que vous souhaitez compléter et entrez un chiffre à l’aide du clavier.
This was part of ISDN (Integrated Services Digital Network) and since GSM is based on this, made its way to the mobile phone.
The electrical telegraph systems, developed in the early 19th century, used simple electrical signals to sent text messages.
In the late 19th century, the wireless telegraphy was developed using radio waves.
As with emailing, in the 2010s, the sending of short informal messages has become an accepted part of many cultures.
This makes texting a quick and easy way to communicate with friends and colleagues, including in contexts where a call would be impolite or inappropriate (e.g., calling very late at night or when one knows the other person is busy with family or work activities).
Like e-mail and voice mail, and unlike calls (in which the caller hopes to speak directly with the recipient), texting does not require the caller and recipient to both be free at the same moment; this permits communication even between busy individuals.