History of

StorageDemetrio CamposDiego QueraltNoelia CastilloRaúl Barrero

PendriveFirst Generation:The Pen Drive (or USB flash drive) was invented in 1998 by IBM as a replacement for floppy drives for ThinkPad product line. Although it was invented by IBM, this contract does not patented and later M-Systems to develop and manufacture non-exclusive basis. The first Pen Drives were manufactured by M-Systems under the brand "Disgo" in sizes of 8, 16, 32 and 64 MB. These were touted as the "true replacements for floppy" and its design continued to 256 MB. Asian manufacturers soon produced their own cheaper than the Disgo series units and changed history.

Second Generation:Within this generation of devices there is connectivity with USB 2.0 standard. However, do not use a whole bandwidth of 480Mbit / s that supports USB 2.0 Hi-Speed specification due to technical limitations of NAND flash memory based. The faster this generation devices use a dual channel controller, although they are still far from possible data transfer rate of a hard disk of the present generation, or the most from high speed USB.

Third Generation:The USB 3.0 standard was announced in late 2008, but consumer devices were not available until early 2010. The USB 3.0 interface specifies transfer rates up to 5 Gbit / s, compared to 40 Mbit / s USB 2.0. Although the USB 3.0 interface allows speeds of very high transfer data from 2011 most USB 3.0 Flash drives do not use all the speed of USB 3.0 interface due to the limitations of their memory controllers, although some channel memory controllers come to market to solve this problem.

CD / DVDCD:

The compact disc (popularly known as CD by the

acronym for Compact Disc) is an optical disc used to

store digital data, consisting of any information

Standard CD having a diameter of 12 cm, a thickness of

1.2 mm and can store up to 80 minutes of audio data or

700 MB. The Mini-CD with 8 cm and are used for the

distribution of simple and keeping drivers up to 24

minutes of audio or 214 MB of data.

The CD is popular in today's world. In 2007 it had sold

200 billion CDs worldwide since its inception. Still, the

CDs are complemented with other types of digital

distribution and storage, such as USB sticks, SD cards,

hard drives and solid state drives. Since its peak in

2000, CD sales have declined about 50%

CD / DVD

DVD: To see if the disk is 1 or 2 coats, look barcodes having the cd, 1 code = 1

Layer A DVD (which means Digital Versatile Disc or a Digital Video Disc) is an

optical disc capable of storing up to 4.7 GB of data, more than six times what a

CD can hold. DVDs are often used to store movies at better quality than a VHS.

DVDs can also have interactive menus and bonus features such as deleted

scenes and commentaries. Like CDs, DVDs are read with a laser.The disc can

have one or two sides, and one or two layers of data per side; the number of

sides and layers determines how much it can hold. A 12 cm diameter disc may

have one of the following storage capacities:

● DVD-5: single sided, single layer, 4.7 gigabytes, or 4.38 gibibytes

● DVD-9: single sided, double layer, 8.5 GB

● DVD-10: double sided, single layer on both sides, 9.4 GB

● DVD-14: double sided,double layer on one side13.3 GB

● DVD-18: double sided, double layer on both sides, 17.1 GB

FloppyFloppy disks were developed in the laboratories of IBM in San Jose, California in 1967. The researcher David Noble proposed an 8-inch flexible means for storing information. Hence the name floppy disk, say, floppy disk. These first discs were used in IBM. In 1971, IBM launched the 8-inch disk memory. The data were stored on the magnetic surface of the disk. At the time it was considered a major breakthrough for its portability. The company Shugart Associates began developing in 1973 sinkers floppy. The interface developed there remains the basis of all decks floppy disks. Even the company IBM used this interface in the PC. The company asked Wang Laboratories Shugart Associates (later Shugart Corporation) creating a disc of 5.25 inch to your desktop. These were very popular and were standard on personal computers. Seagate Technology Company was founded in 1979 to create floppy disks, but also from hard drives. By the end of that year they had a 6 MB hard disk capacity (ST-506). In 1981, the company Sony launched the floppy disk 3,5 inches. These were smaller, stronger and more capable than its predecessor. He replaced quickly to 5,25 inches, becoming a standard on Apple and PC computers.

Memory Card Micro SD: The company SanDisk created the format, they called it T-Flash. It went through another name and was the TransFlash briefly before they finally

settled on calling it Micro SD. They announced the format in the middle of 2005, and they went on sale about a year later in 2006. The cards, because of their

small size, were popular immediately. Consumers and companies were finding that the smaller size and high memory capacity would make them work quite well

in a number of different arenas.

When they first went onto the market, it was possible to find Micro SD cards that were in a variety of sizes. You could buy 32 MB, 64 MB and 128MB cards. Of

course, it was only a matter of time before the capacity grew. Within a year, they were offering 2GB cards. Now, it is possible to find 2GB, 4GB, 16GB, and 32 GB

Micro SD cards on the store shelves. In just that short span of time, the memory capacity for the devices grew by an amazing amount! In the future, most believe

that the cards could actually start to hold even more information.

A memory card or flash card is an electronic flash memory data storage device used for storing digital information. These are commonly used in many electronic

devices, including digital cameras, mobile phones, laptop computers, MP3 players and video game consoles, Tablets. Most of these can be diminutive, re-

recordable, and can retain data without power.

History

A few years ago there were three types of memory card used in cameras, CompactFlash, SmartMedia and Sonyâs Memory Stick.

All memory card drive