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STORAGE
MED
IA
&
STORAGE
DEVIC
ES
BASIC TERMS:
Recording or saving data future use.
Store/Save
device that holds the data or information.
Storage Media
KINDS OF STORAGE MEDIAA. Magnetic Storage
Hard Disks
stores data on a flat rigid disk made of stacked aluminum or glass disk coated with magnetic oxide.
data are stored on disks and tape by magnetizing selected particles of an oxidized-based surface coating.
KINDS OF STORAGE MEDIA
Magnetic Disksstores data on a flexible circular disk covered with a thin layer of magnetic oxide. This is commonly known as floppy-disk or diskette.
5.25” Mini Floppy
3.5” Micro Floppy
3. Magnetic Tape
-stores data on flat continuous ribbon coated with magnetic oxide. Commonly in the form of cassette tape drive used for audio recording and playback.
B. Optical Storage
B. Thumb Drive, Flash Drive, USB Stick
-stores data on through the use of USB (Universal Serial Bus).
Storage capacity will range from:1GB to 32GB
-USB was designed to replace serial ports and parallel ports. USB 1.0 data rate 12 Million bits per second
USB 2.0 added a higher bandwidth of 480 Mbps. Allows data transfer
STORAGE
MED
IA
CAPACIT
Y
HO
W M
AY
LE
TT
ER
S W
I LL
TH
ER
E B
E I
N 1
GB
?
STORAGE CAPACITY- It is the maximum amount of data that can be stored in a storage medium.
Data is stored in a storage media in BYTES
Each character (including space) = 1 byte
How many bytes are there in A BURGER?
Answer: 8
The capacity is usually measured in:
• kilobyte (KB) = to about 1,000 bytes
• gigabyte (GB) = to about 1 Billion bytes• megabyte (MB) = to about 1,000,000 bytes
How many bytes are there
in 720KB?
Answer: 720,000 bytes
How many bytes are there in 800MB?
Answer: 800,000,000 bytes
How many bytes are there in 40GB?
Answer: 40,000,000,000 bytes
• terabyte (TB) = to about 1 Trillion bytes
TYPES ACCORDING TO CAPACITY
Storage Media Capacity
Mini-Floppy:360K or 1 MB
Micro Floppy: 720K or 1.44MB
Capacity may vary from 80GB to 2 TB
TYPES ACCORDING TO CAPACITY
Storage Media Capacity
Optical disc can store more than 800 MB- 50GB
Digital Audio Tapes (DAT) can store 1.3GB or 2 GB
USB Flash Drive, Pen Drives
can store 1GB or 32 GB
Storage Devices Are devices that records and retrieves the data from the storage medium.
Storage Media and their Devices
Inside the Mini-Tower
Tape Drive
Disk Drive
ROM drives
Storage Media and their Devices
Inside the Mini-Tower
Disk Drive
Storage Media and their Devices
Tape Drive
ROM drives
USB Port
REFLECTION:
Rapid technological advances easily
obsolete electronic equipment.
Fewer than 6% were recycled; the bulks were DISPOSED OFF;
Out of 175 million computers comes a laundry list of TOXINS:
650 million pounds of LEAD
987,000 pounds of CADMIUM
231,000 pounds of MERCURY
billion pounds of PLASTIC
How can we MINIMIZE the rapid waste contributions of computer electronics to our
environment?