![]() Porté par une passion sans faille pour la vérité et une inébranlable sincérité, Mémoires vives est un témoignage exceptionnel, appelé à devenir un classique de notre temps.Įdward Snowden has no new bombshells in this book, but "Permanent Record" is still full of surprises in some ways. C'est une immense fierté pour Macmillan de publier Permanent record." Il n'y a aucun doute que le monde est plus sûr et respectueux grâce à ce qu'il a fait. Il a témoigné ainsi d'un courage immense, et, qu'on le veuille ou non c'est une fabuleuse histoire américaine. "Edward J Snowden a décidé à l'âge de 29 ans de sacrifier son avenir personnel pour le bien de son pays, déclare John Sargent, président de Macmillan USA. Il révèle pour la première fois dans ce livre son histoire, comment il a participé à la mise en place de ce système et la crise de conscience qui l'a conduit à la révéler au public. Ils veulent établir un système de surveillance de masse sans précédent, capable de s'infiltrer dans la vie privée de chaque personne sur la planète. L'ouvrage original sera publié par Metropolitan books (Macmillan) aux Etats-Unis le 17 septembre 2019.Įn 2013, un jeune homme de 29 ans surprend le monde entier en quittant la communauté du renseignement et en révélant que le gouvernement des États-Unis poursuit le projet secret de collecter toutes nos conversations téléphoniques, nos textos et nos emails. Computers can use only the generation of memory that they are designed for.Les Éditions du Seuil publieront en septembre prochain, simultanément avec 20 autres éditeurs dans le monde, Mémoires vives, l'édition française du livre d'Edward J Snowden, Permanent record. Because the electrical parameters are different for each generation of memory, the physical shape of the memory changes to prevent the wrong memory from being installed in a computer. These physical differences are standard across the memory industry. One of the reasons for industry-wide standardization in memory is that computer makers need to know the electrical parameters and physical shape of the memory that can be installed in their computers. To prevent users from inserting incompatible memory, modules are physically different for each memory technology generation. Generally, components are created to the highest standard at the time of manufacture, but with the expectation that technology will continue to change. Memory must be compatible with the other components in a computer system. Each successive generation is faster and uses less energy. Memory standards are controlled by JEDEC, the Joint Electron Device Engineering Council, an independent semiconductor engineering trade organization and standardization body. The next generation of memory, DDR2, is faster and uses less energy than the original DDR. Using both beats to transfer data makes double data rate memory significantly faster than single data-rate memory, which used only one edge of the clock signal to transfer data. Double data-rate is different than dual-channel memory, learn about dual-channel memory here. A clock signal is made up of both a downbeat and an upbeat. DDR was both faster and used less energy than SDR. DDR memory transfers data to the processor on both the rising and falling edges of the clock signal. Double data rate, or DDR, was developed, and the previous technology became known as single data rate, or SDR. Synchronous memory synchronizes the memory module's responses with the system bus.Īs other computer components increased their speed, memory speed also needed to increase. Previously, memory had to be asynchronous, that is, it operated independently of the processor. SDRAM (synchronous dynamic random access memory) was developed in response to increased speed in other computer components. ![]()
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