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Secure Digital

Secure Digital
Secure Digital (SD) is a nonvolatile memory card used extensively in portable devices, such as mobile phones, digital cameras, GPS navigation devices, handheld consoles, and tablet computers. The Secure Digital standard was introduced in August 1999 as an evolutionary improvement over MultiMediaCards (MMC). The Secure Digital standard is maintained by the SD Association (SDA). SD technologies have been implemented in more than 400 brands across dozens of product categories and more than 8,000 models.[1] The Secure Digital format includes four card families available in three different form factors. There are many combinations of form factors and device families, although as of 2013, the prevailing formats are full- or micro-size SDHC and full/micro SDXC. The SDA uses several trademarked logos to enforce compliance with its specifications and assure users of compatibility.[5] Overview[edit] SD[edit] SDHC[edit] SDXC[edit] exFAT filesystem[edit] Ultra High Speed bus[edit] SDIO[edit] Speeds[edit]

Difference between Speed Class, UHS Speed Class, and Speed Ratings (performance) for SD/SDHC/SDXC cards Difference between Speed Class, UHS Speed Class, and Speed Ratings (performance) for SD/SDHC/SDXC cards What is the difference between Speed Class and Speed Ratings for SDTM/SDHCTM cards? The speed rating measures maximum transfer speed for reading and writing images to and from a memory card, expressed as megabytes per second. However, video doesn't need as big a data pipe because the video format is a smaller "fixed stream" that uses only a portion of the data pipe. Unlike card write speeds that measure maximum performance, class ratings measure the minimum sustained speed required for recording an even rate of video onto the card. What does this difference mean for me? Still digital images shot on high-megapixel cameras should utilize fast data throughput (a large data pipe), higher speed cards for improved performance. Speed Class is a minimum speed based on a worst case scenario test. The current SDHC specification defines Class 2, 4, 6, 8 and 10 as follows:

Hard disk drive A disassembled and labeled 1997 HDD laying atop a mirror. Overview of how an HDD functions The two most common form factors for modern HDDs are 3.5-inch in desktop computers and 2.5-inch in laptops. As of 2012[update], the primary competing technology for secondary storage is flash memory in the form of solid-state drives (SSDs). History[edit] Video of modern HDD operation (cover removed) HDDs were introduced in 1956 as data storage for an IBM real-time transaction processing computer[3] and were developed for use with general purpose mainframe and minicomputers. In 1961 IBM introduced the model 1311 disk drive, which was about the size of a washing machine and stored two million characters on a removable disk pack. Some high performance HDDs were manufactured with one head per track, e.g., IBM 2305 so that no time was lost physically moving the heads to a track.[8] Known as Fixed-Head or Head-Per-Track disk drives they were very expensive and are no longer in production.[9]

How to Avoid Identity Theft Identity Theft is one of the worst things that can happen to your personal finances. When someone assumes your identity they can ruin your credit score and destroy your financial reputation for years. Identity theft is a growing crime, but there are some important measures you can take to avoid having your identity stolen. How to Avoid Identity Theft Online Shredding statements is always a good idea The Federal Trade Commission maintains an Identity Theft Awareness website that outlines three important steps for avoiding identity theft: Deter Identity Theft, Detect Identity Theft, and Defend Against Identity Theft. Deter Identity Theft The first step and most effective way to prevent identity theft is to deter identity thieves. Detect Identity Theft The next step is to detect identity theft if it has occurred. Monitor your credit report and look for errors. Here are several ways you can detect identity theft: Identity theft monitoring offers: Defend Against Identity Theft

Secure Digital Da Wikipedia, l'enciclopedia libera. Esempi di schede SD (fronte e retro) in contenitori di protezione Dall'alto in basso i tre formati in uso per le schede Secure Digital: SD, mini SD, micro SD Caratteristiche[modifica | modifica sorgente] Formati[modifica | modifica sorgente] Mini SD con adattatore Esistono tre formati di schede Secure Digital, con dimensioni fisiche via via minori: l'originario formato SD (32 x 24 x 2,1 mm);il miniSD (21,5 x 20 x 1,4 mm);il microSD, compatibile con le SD e di dimensioni ancora più contenute (11 x 15 x 1 mm); quest'ultimo tipo era chiamato inizialmente T-Flash, poi transflash e infine nominato stabilmente microSD dopo che tale nome fu adottato dalla SD Card Association). Anche le schede nei formati miniSD e microSD, mediante semplici adattatori, possono essere utilizzate con lettori di schede SD. Capacità[modifica | modifica sorgente] Le "Secure Digital" hanno capacità molto elevate, seconde solo alle CompactFlash. Resistenza[modifica | modifica sorgente]

untitled iBooks Author iBooks Author (iBA) is an e-book authoring application by Apple Inc. Documents created with iBooks Author may be exported as PDF files or be published to the Apple iBooks Bookstore. iBooks Author is available free of charge. Apple released iBooks Author on January 19, 2012 at an education-focused special event in New York City.[2] Simultaneously, Apple also released iBooks 2 and a new iBooks Bookstore category for textbooks.[3] The software is proprietary and available only for Mac OS X. Apple offers it for free download in the Mac App Store. Apple describes iBooks Author as a tool for "educators and smaller publishers to create their own books".[2] Documents created by iBooks Author may only be sold for a fee if they are accepted by and distributed by Apple,[4][5] but authors also have the option to distribute their work anywhere if the work is being distributed for free.[6] A new version of iBooks Author was released on October 23, 2012. References[edit] External links[edit]

Three steps to properly protect your personal data With groups like Anonymous actively looking to embarrass your company, laptops thefts occurring every second, and the recent poor US District Court ruling on fifth amendment password protection rights, it is time you actually encrypt your data properly. Your Windows login password is not encrypting your computer (surprise!). Full-disk encryption (used by very few people) is a good step, but by itself it still will not completely protect your data from prying eyes, overzealous governments, or your own mistake of leaving your company's crown jewels at the local coffee shop. More in the Investigator's Toolkit: Instead—as with many successful security designs—you can set up a layered approach to protecting your data with encryption. It's fairly easy, quick, and free. To create a more complete protection scheme, I am going to walk you through three steps to build this layered security approach: Step one: Install full-disk encryption Now follow the instructions and create a strong password.

Serial ATA Da Wikipedia, l'enciclopedia libera. Il Serial ATA è l'evoluzione dell'ATA (anche conosciuto come IDE), rinominato Parallel ATA (PATA) in seguito alla nascita del Serial ATA in modo da evitare fraintendimenti, rispetto al quale il Serial ATA presenta tre principali vantaggi: maggiore velocità, cavi meno ingombranti e possibilità di hot swap. Gli hard disk esterni di ultima generazione possono essere collegati al computer tramite l'interfaccia ESATA oltre alla classica porta USB 2.0. o la più moderna USB 3.0. Le versioni[modifica | modifica sorgente] La prima versione del Serial ATA, che ha debuttato nel 2002, supporta una velocità di trasmissione dei dati pari a 1,5 gigabit al secondo. SATA 3.0[modifica | modifica sorgente] Nel marzo 2009 è stata presentata al pubblico in occasione dell'Everything Channel Xchange Conference di New Orleans la nuova versione che ha raggiunto una velocità di trasferimento dati di 6 Gbps, contro i 3 Gbps della versione SATA 2. Connettore del cavo alimentazione

Het gebruik van administratieve mailbox - FAQ - Service Desk Naast persoonlijke e-mailadressen zijn er heel wat administratieve e-mailadressen in gebruik bijvoorbeeld voor congressen of secretariaten. Enkele voorbeelden:,,,, ... Deze administratieve postvakken hebben een ue-nummer en worden beheerd door één of meerdere personen. Het openen van een administratieve mailbox gebeurt via of via outlook Rechten verlenen aan de beheerder(s) van het postvak Diegenen die het administratief postvak moeten beheren, vragen rechten hiervoor aan de manager. in Outlook: zoek het administratief postvak (bv. Deze persoon kan via de webinterface de volgende rechten toekennen: full access en zenden als (deze laatste is incl. write personal information). Meer informatie over het toevoegen van Full-Access rechten vind je in het document gwbeheer Full-Access.pdf

Home » The M-DISC™ Find Your Own Private Internet With Freenet PC World – by Alex Wawro Anonymous peer-to-peer communication on the Internet isn’t just a handy tool for privacy enthusiasts; it’s critical for preserving free speech in the digital world. Anonymous file-sharing services like BitTorrent are legion, but their utility is limited—you can share only files—and their reputations are unfairly tarnished by people who use them to share media illegally. If you’re looking for a highly anonymous peer-to-peer network with websites, forums, and more, look no farther than the Free Network, one of the best-kept secrets in anonymous communication. Here’s how it works: Freenet is an anonymous peer-to-peer data-sharing network similar to BitTorrent, but with one key difference: All uploaded data is assigned a unique key, sliced up into small, encrypted chunks and scattered across different computers on the network. Next, head over to the Freenet Project website, and download the Freenet client for your operating system.