DATA STORAGE DEVICESNicole Arias Elizondo

Instituto Benjamín franklin

FLASH MEMORY

Flash memory is a non-volatile computer storage chip that can be electrically erased and reprogrammed. It was developed from EEPROM(electrically erasable programmable read-only memory) and must be erased in fairly large blocks before these can be rewritten with new data. The high density NAND type must also be programmed and read in (smaller) blocks, or pages, while the NOR type allows a single machine word (byte) to be written or read independently.

SECURE DIGITAL (SD)

Secure Digital (SD) is a non-volatile memory card format developed by the SD Card Association (SDA) for use in portable devices. The SD technology is used by more than 400 brands across dozens of product categories and more than 8,000 models.

TRANSFLASH O MICRO SD Las tarjetas microSD o Transflash corresponden a un

formato de tarjeta de memoria flash más pequeña que la MiniSD, desarrollada por SanDisk; adoptada por la Asociación de Tarjetas SDbajo el nombre de «microSD» en julio de 2005. Mide tan solo 15 × 11 × 1 milímetros, lo cual le da un área de 165 mm². Esto es tres veces y media más pequeña que la miniSD, que era hasta la aparición de las microSD el formato más pequeño de tarjetas SD, y es alrededor de un décimo del volumen de una tarjeta SD. Sus tasas de transferencia no son muy altas, sin embargo, empresas como SanDisk han trabajado en ello, llegando a versiones que soportan velocidades de lectura de hasta 10 Mb/s. Actualmente, ya existen tarjetas microSD fabricadas por Panasonic que alcanzan los 90 Mb/s de lectura y los 80 Mb/s de escritura, pero tienen unos precios todavía inalcanzables para la gran mayoría del público.

COMPACT FLASH (CF)

CompactFlash (CF) is a mass storage device format used in portable electronic devices. Most CompactFlash devices contain flash memory in a standardized enclosure. The format was first specified and produced by SanDisk in 1994. The physical format is now used for a variety of devices.

MULTIMEDIA CARD (MMC)

The MultiMediaCard (MMC) is a flash memory memory card standard. Unveiled in 1997 by SanDisk and Siemens AG, it is based on Toshiba's NAND-based flash memory, and is therefore much smaller than earlier systems based on Intel NOR-based memory such as CompactFlash. MMC is about the size of a postage stamp: 24 mm × 32 mm × 1.4 mm. MMC originally used a 1-bit serial interface, but newer versions of the specification allow transfers of 4 or 8 bits at a time. It has been

SMART MEDIA (SM)

SmartMedia is a flash memory card standard owned by Toshiba, with capacities ranging from 2 MB to 128 MB. SmartMedia memory cards are no longer manufactured.

MINI MMC

A memory card or flash card is an electronic flash memory data storage device used for storing digital information. They are commonly used in many electronic devices, including digital cameras, mobile phones, laptop computers, MP3 players, and video game consoles. They are small, re-recordable, and able to retain data without power.

XD CARD

xD-Picture Card is a flash memory card format, used mainly in older digital cameras. xD stands for Extreme Digital. xD cards are available in capacities of 16 MiB up to 2 GiB.

MEMORY PEN (USB MASS STORAGE)

A USB flash drive is a data storage device that includes flash memory with an integrated Universal Serial Bus (USB) interface. USB flash drives are typically removable and rewritable, and physically much smaller than a floppy disk. Most weigh less than 30 g. As of January 2012 drives of 256GB were available, 512GB and 1 terabytes (TB) drives were in planning, and storage capacities as large as 2 terabytes are planned, with steady improvements in size and price per capacity expected. Some allow up to 100,000 write/erase cycles (depending on the exact type of memory chip used) and 10 years shelf storage time.

3.5- INCH FLOPPY DISK

A floppy disk is a disk storage medium composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic carrier lined with fabric that removes dust particles. They are read and written by a floppy disk drive (FDD).

Floppy disks, initially as 8-inch (200 mm) media and later in 5.25-inch (133 mm) and 3.5-inch (89 mm) sizes, were a ubiquitous form of data storage and exchange from the mid-1970s well into the first decade of the 21st century

DVD-RW

A DVD-RW disc is a rewritable optical disc with equal storage capacity to a DVD-R, typically 4.7 GB. The format was developed by Pioneer in November 1999 and has been approved by the DVD Forum. The smaller Mini DVD-RW holds 1.46 GB, with a diameter of 8 cm

TAPE DRIVE

A tape drive is a data storage device that reads and performs digital recording, writes data on a magnetic tape. Magnetic tape data storage is typically used for offline, archival data storage. Tape media generally has a favorable unit cost and long archival stability.

CD-R

A CD-R (Compact Disc-Recordable) is a variation of the Compact Disc invented by Philips and Sony. CD-R is a Write Once Read Many (WORM) optical medium, although the whole disk does not have to be entirely written in the same session.

CD-R retains a high level of compatibility with standard CD readers, unlike CD-RW which can be re-written, but is not capable of playing on many readers.

CD-RW

A CD-RW (Compact Disc-ReWritable) is a rewritable optical disc. It was introduced in 1997, and was known as "CD-Writable" during development. It was preceded by the CD-MO, which was never commercially released.

ZIP DISK

The Zip drive is a medium-capacity removable disk storage system that was introduced by Iomega in late 1994. Originally, Zip disks launched with capacities of 100 MB, but later versions increased this to first 250 MB and then 750 MB.

MINI DVD

MiniDVD (Mini DVD or miniDVD) is a DVD disc having 8 cm in diameter.

The 8 cm optical disc format was originally used for music CD singles, hence the commonly used names CD single and miniCD. Similarly, the manufactured 8 cm DVDs were originally used for music videos and as such became known as DVD single.

MiniDVD is known also as "3 inch DVD", referring to its approximate diameter in inches.

MINI CD

MiniDVD (Mini DVD or miniDVD) is a DVD disc having 8 cm in diameter.

The 8 cm optical disc format was originally used for music CD singles, hence the commonly used names CD single and miniCD. Similarly, the manufactured 8 cm DVDs were originally used for music videos and as such became known as DVD single.

MiniDVD is known also as "3 inch DVD", referring to its approximate diameter in inches.