The document discusses computer storage media, including definitions, units of measurement, and examples. It begins with an activity asking students to classify common peripherals as input, output, or I/O devices. It then defines media storage and lists examples like USB flash drives, CDs, and DVDs. The document explains that the basic unit of digital storage is the bit and the common unit is the byte. Conversions between KB, MB, GB, and TB are provided. Finally, common storage media are described, such as hard drives, floppy disks, CDs, DVDs, flash drives, and memory cards. Exercises ask students to complete tables, choose appropriate storage media for files, and transfer folders between computers

2.  Reminders about peripherals
 Media storage
Definition
Unit of measurement
Presentation of some media storage
 Exercises

3. Activity 1: Name some peripherals then classify them in the
table below
Input Device Output Device I/O Device

4. Activity 1: Correction
Input Device Output Device I/O Device

5.  Puts copies a paper document into
the computer
 Allows computer users to input
audio into their computers
 Printer transfers data from a
computer onto paper
Activity 2:Link each device with its description

6. Activity 2:Correction
 Puts copies a paper document into
the computer
 Allows computer users to input
audio into their computers
 Printer transfers data from a
computer onto paper

7. 1. Definition

8.  You have download images from a website to
use them in your project
How can you bring these images from your
personal computer To class computer ?
 Using ……………….. Or ………………..I save
them in the……………… of the class computer

9. To store
to put or keep things in a special
place for use in the future.
Synonymous
To record
(Computer Science)
to keep data for the future, by
copying it on a computer

11. 1-Find the name of each unit
2-Cross out units that aren’t storage media
; ;
;
; ;
;
;
;
;
;

12. Correction
; ;
;
; ;
;
;
;
;
;

13. Media storage are
used to store (save)
data permanently.
They can be
transported from a
computer to another.
 Example: USB Flash
Disk, CD, DVD…

15. By opening the shortcut« Computer » on the desktop
OR
By clicking on « Computer » in your Start Button
OR
+ E

16. How many media storage in your computer ?
Determine the size of your hard disk.
Create a text document « test » in your local disk (C:).
 Open it then write « storage media ».
 Save the text then close the document.
 Determine the size of the file.
 What does 13 bytes represent?
 Open the file, write “CD”, save the text then close the
document.
 Determine the new size of the file.
 What do you notice?
 Conclude

18. 2. Unit of measurement

19. ?

20. In computer science
to measure capacity
(amount of) a
storage medium we
use BIT and its
multiples

21. JOHN ATANASOFF in 1940 invent The
Binary Code in order to use
information in the computer
Technology of storing and reading
only two values: ON (1) and OFF (0)
The Binary Code

23. A = 01000001
B=01000010
C=01000011
D = 01000100
E = 01000101
F = 01000110
G = 01000111
H = 01001000
I = 01001001
J = 01001010
K = 01001011
L = 01001100
M = 01001101
N = 01001110
O = 01001111
P = 01010000
Q = 01010001
R = 01010010
S = 01010011
T = 01010100
U = 01010101
V = 01010110
W = 01010111
X = 01011000
Y = 01011001
Z = 01011010

24. You would like to save the character «A » , the machine
transforms the character to 01000001 then save it.
This code is composed by 8 numbers which are 0 and 1.
1 is called bit.
0 is called bit.
The character “A” is coded using 8 bits.
8 bits =1 byte
The character “A” is coded using byte.
The Byte is the unit of measurement of data.

26. CONVERT THOSE CAPACITIES
3000 KB = ………………………… MB
2 1000MB =…………………….… GB
15 MB = …………………..…….. KB
4 GB = ………………………..….. MB
1,2TB=…………..GB…………….MB
3698688 bytes=..………KB=…….....MB

27. CORRECTION
3000 KB = ………………………… MB
2 1000MB =…………………….… GB
15 MB = …………………..…….. KB
4 GB = ………………………..….. MB
1,2TB=…………..GB…………….MB
3698688 bytes=..………KB=…….....MB

28. CONVERT THOSE CAPACITIES
100 MB = ………………………… KB
200 KB = ……………………….… MB
12 GB = …………………..…….. KB
4000 MB = ………………………..….. GB
3.2 MB = …………………………. KB
150000.6 KB = ……………………………GB
10052000 Bytes = ……….….... KB = ………… MB

29. CORRECTION
100 MB = ………………………… KB
200 KB = ……………………….… MB
12 GB = …………………..…….. KB
4000 MB = ………………………..….. GB
3.2 MB = …………………………. KB
150000.6 KB = ……………………………GB
10052000 Bytes = ……….….... KB = ………… MB

30. ORDER THESE CAPACITIES IN
ASCENDING ORDER
20 KB<> 500 Bytes<> 2025 MB<> 2 GB<> 500 MB <>0.1 TB<> 2022KB<> 1 MB
…………….. < …………… < …………… < .....……………..< …………… <
…………… …< …………. < ………….

31. CORRECTION
20 KB<> 500 Bytes<> 2025 MB<> 2 GB<> 500 MB <>0.1 TB<> 2022KB<> 1 MB
…………….. < …………… < …………… < .....……………..< …………… <
…………… …< …………. < ………….
20 KB 0.019 MB
500 Bytes 0.0004 MB
2 GB 2048 MB
0.1 TB 104857.6 MB
2022KB 1.97

32. 3. Presentation of some
media storage

33. Difference between storage medium
and storage device
Storage medium Storage device
The physical material that
actually holds data is called a
storage medium
The hardware that writes data to or
read data from a storage media is a
storage device

34. Magnetic storage Media
A m a g n e t i c d i s k ' s m e d i u m
contains i r o n p a r t i c l e s ,
which can be polarized—given a
magnetic charge—in
one of t w o d i r e c t i o n s .
A disk drive uses r e a d / w r i t e
h e a d s containing
electromagnets to create magnetic
charges on the
medium.
Why They Call
It a magnetic
Medium

35. Magnetic storage Media

36. Floppy disk, or diskette,
is a flexible disk storage
medium, the usual storage
capacity is 1.44 MB They are
read and written by a floppy
disk drive
Floppy disks have just about
disappeared from the
computer world

37. A Hard Disk Drive is the central
storage of a computer. Hard
drives can be external or internal,
and store all data present on a
computer. They can range from
80GB and below to 2TB or higher.
Hard disk drives are composed of
rapidly rotating disks. The speed of
a hard drive is dependent on the
RPM (rotations per minute)
Platter

39. Optical storage Media

40. CD-ROM
Compact Disc Read-Only Memory
can store up to 650 MB of data, or
about 70 minutes of audio.
A CD-ROM is manufactured with the
data(Music, Games…) already on it
CD-ROM it is not recordable that is
mean it is impossible to use the Disc
writer to burn data on.
CD-R
Compact Disc Recordable can
store up to 700 MB of data or
about 80 minutes of audio
A CD-R manufactured as a blank
disc (empty) and the data is written
using a CD writer, data can't be
deleted or erased after that.

41. CD-RW
Compact Disc-ReWritable can store
up to 700 MB of data or about 80
minutes of audio
A CD-RW manufactured as a blank
disc (empty) and the data is written
using a CD writer, data can be erased
or modified many times

42. DVD-ROM
Digital Versatile Disc Read-Only Memory similar to CD-ROM
Storage capacity : 4,7GBof data, or about 120minutesofaudio.
DVD-R
Digital Versatile Disc Recordable similar to CD-R
Storage capacity : 4,7GBof data, or about 120minutesofaudio
DVD-RW
digital versatile disc ReWritable similar to CD-RW
Storage capacity : 4,7GBof data, or about 120minutesofaudio

44. Flash Disk :
USB flash drives are typically removable and
rewritable.
To use it, you must plug it into a USB port
Storage capacity : 4 GB, 32 GB , 128 GB, 256
GB (2009)
Other storage media

45. Memory Card
It is a removable storage media used with mobile
phones, cameras
Storage capacity : 128 GB (2011)
To use it, you must plug it into a Card Reader
A memory card adapter is used to transfer data from
one place to another.
A USB adapter can be taken from one computer to
another to transfer data.

47. Do a research about Blu-ray discs

49. CONVERT THOSE CAPACITIES TO KB
8 MB…………………..KB
8500 Bytes…………….KB
0,002 GB…………………….KB
0.0000001 TB………………….KB

50. CORRECTION
8 MB…………………..KB
8500 Bytes…………….KB
0,002 GB…………………….KB
0.0000001 TB………………….KB

51. Exercice 1

52. • Optical storage media,
• Storage capacity : 700 MB.
• Recordable.
• Not erasable
• To read data you can just use
a CD drive or a DVD Drive
• To write data you have to use
a CD writer or a DVD writer.

53. • Optical storage media,
• Storage capacity : 700 MB.
• Recordable.
• Not erasable
• To read data you can just use
a CD drive or a DVD Drive
• To write data you have to use
a CD writer or a DVD writer.

54. • Optical storage medium
• Not recordable
• To read data stored you have
to use a DVD drive.

55. • Optical storage medium
• Not recordable
• To read data stored you have
to use a DVD drive.

56. • Optical storage media.
• My storage capacity :700 MB.
Not recordable
• Not Erasable

57. • Optical storage media.
• My storage capacity :700 MB.
Not recordable
• Not Erasable

58. • Optical storage media
• My storage capacity: 700 MB,
I’m rewritable.
• To write data you have to use
a CD writer or a DVD writer.

59. • Optical storage media
• My storage capacity: 700 MB,
I’m rewritable.
• To write data you have to use
a CD writer or a DVD writer.

60. • Magnetic Storage media
• Not flexible
• Use it mainly to store data on
computer

61. • Magnetic Storage media
• Not flexible
• Use it mainly to store data on
computer

62. • I’m a removable and
rewritable storage media
• To read or write data stored
you have to plug me into a
USB port.

63. • I’m a removable and
rewritable storage media
• To read or write data stored
you have to plug me into a
USB port.

64. Complete the following table with the appropriate words
Exercice 2

66.  You have the following files that you wish to save on
storage medium:
 Suggest the most appropriate storage medium for each file
from this list:
Flash disk / CD-R / Floppy disk / DVD-R
Data to save Size Appropriate Storage medium
File.avi 547 MB
Sound.mp3 1 MB
Movie.avi 8.7 GB
Documents.rar 3788 MB
Exercice 3

67.  You have the following files that you wish to save on
storage medium:
 Suggest the most appropriate storage medium for each file
from this list:
Flash disk / CD-R / Floppy disk / DVD-R
Data to save Size Appropriate Storage medium
File.avi 547 MB
Sound.mp3 1 MB
Movie.avi 8.7 GB
Documents.rar 3788 MB
Exercice 3 Correction

68. Exercice 4
WORK GROUP
The class will be divided by groups of (2 students)
Each group will create In “Documents” a folder
named “WORK”

69. On the desktop of the
computer 01 you have 5
folders : Flowers,
Landscape, Towns, Cars and
Animals.

70. Each group will choose Two
folders
Transfer the folder from the
computer 01 to your computer
using the appropriate storage
media and copy it in ( Works)

72. you must get all the
others CDs recorded by
your friends to copy the
others folders from
Now record all the folders
(located on your desktop)
on a CD.

73. Create a CD audio using
sound in folder “Music”
from the desktop
Exercice 5