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

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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?