This document provides a history of different types of storage devices, including pendrives, CDs/DVDs, floppy disks, memory cards, and all memory card drives. It describes the first generations of pendrives invented by IBM in 1998. It outlines the storage capacities of CDs and details the layers and sizes of DVDs. It also discusses the development of floppy disks by IBM and Shugart Associates in the 1970s and 1980s. The document notes the creation of the micro SD card format by SanDisk in 2005 and its growing storage capacities. Finally, it states that a few years ago the main memory card types were CompactFlash, SmartMedia, and Memory Stick.

1. History
of
Storage
Demetrio Campos
Diego Queralt
Noelia Castillo
Raúl Barrero

3. Pendrive
First 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.

4. CD / DVD
CD:
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,

5. 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

6. Floppy
Floppy 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.

7. 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.

8. All memory card drive