This document provides a history of data storage devices, beginning with magnetic tape in 1928 and progressing to modern cloud backup solutions. It describes several important innovations in computer storage over time, including magnetic drums, Williams tubes, floppy disks, CDs, DVDs, flash memory cards, and Blu-ray discs. The document shows how storage technologies have evolved from early magnetic and optical formats to today's cloud-based solutions as hardware and internet capabilities continue to advance.

1. ‫التخزينية‬ ‫االجهزة‬ ‫تاريخ‬

2.  Humankind has always tried to find ways to store
information. In today s modern age, people have
become accustomed to technological
terminology, such as CD-ROM, USB Key, and
DVD. Floppy disks and cassette tapes have been
forgetting except for the most nostalgic.
Subsequent generations have simply forgotten
about the technology that helped evolve the
efficient computer storage systems we all use
everyday. As time humanity continues to push
the envelope of innovation to create new
possibilities.

5. 1928 Magnetic Tape
Fritz Pfleumer, a
German engineer,
patented magnetic
tape in 1928. He
based his invention off
Vlademar Poulsen's
magnetic wire.

6. 1932 Magnetic Drum
G. Taushek, an Austrian
innovator, invented the
magnetic drum in 1932.
He based his invention
off a discovery credited
to Fritz Pfleumer.

7. 1946 Williams Tube
Professor Fredrick C. Williams
and his colleagues developed
the first random access
computer memory at the
University of Manchester
located in the United
Kingdom. He used a series of
electrostatic cathode-ray
tubes for digital storage. A
storage of 1024 bits of
information was successfully
implemented in 1948.

8. 1956 Hard disk
A hard disk
implements rotating
platters, which stores
and retrieves bits of
digital information
from a flat magnetic
surface.

9. 1963 Music tape
Philips introduced the compact
audio cassette in 1963. Philips
originally intended to use the
audio cassette for dictation
machines; however, it became
a popular method for
distributing prerecorded music.
In 1979, Sony's Walkman
helped transformed the use of
the audio cassette tape, which
became widely used and
popular.

10. 1971 8" Floppy
IBM started its development of
an inexpensive system geared
towards loading microcode into
the System/370 mainframes. As
a result, the 8-inch floppy
emerged. A floppy disk, a
portable storage device made of
magnetic film encased in
plastic, made it easier and faster
to store data.

11. 1980 CD
During the 1960s, James T. Russel
thought of using light to record and
replay music. As a result, he invented the
optical digital television recording and
playback television in 1970; however,
nobody took to his invention. In 1975,
Philips representatives visited Russel at
his lab. They paid Russel millions for him
to develop the compact disc (CD). In
1980, Russel completed the project and
presented it to Sony.

12. 1981 3.5" Floppy
The 3.5-inch floppy disk
had significant advantages
over its predecessors. It
had a rigid metal cover
that made it harder to
damage the magnetic film
inside.

13. 1990 MOD
The Magneto-Optical disc
emerged onto the information
technology field in 1990. This
optical disc format used a
combination of optical and
magnetic technologies to
store and retrieve digital data.
A special magneto-optical
drive is necessary to retrieve
the data stored on these 3.5
to 5.25-inch discs.

14. 1995 DVD
DVD became the next
generation of digital disc
storage. DVD, a bigger and
faster alternative to the
compact disc, serves to store
multimedia data.

15. CD-RW
The Compact Disc Rewritable disc, a
rewritable version of the CD-ROM,
allows users to record digital data
over previous data.

16. 1997 Multimedia Card
The Multimedia Card (MMC)
uses a flash memory card
standard to house digital
data. It was introduced by
Siemen's and SanDisk in
1997.

17. 1999 Microdrive
A USB Flash Drive uses a
NAND-type flash memory to
store digital data. A USB Flash
Drive plugs into the USP
interface on standard
computers.

18. SD Card
The Secure Digital (SD) flash
memory format incorporates
DRM encryption features
that allow for faster file
transfers. Standard SD cards
measure 32 millimeters by
32 millimeters by 2.1
millimeters. A typical SD
card stores digital media for
a portable device.

19. 2003 Blu Ray
Blu-Ray is the next generation
of optical disc format used to
store high definition video
(HD) and high density storage.
Blu-Ray received its name for
the blue laser that allows it to
store more data than a
standard DVD. Its competitor
is HD-DVD.

20. Cloud Backup Solutions
Zetta’s cloud enables
businesses to protect data
using backup, recover from a
disaster, and archive unused
files using only a lightweight
sofware client and Zetta’s bi-
coastal datacenters. As
storage hardware and
internet bandwidth continue
to develop, so will Zetta's
performance.

21. ALI ALYami
&
Jalal AL Ahdal