STORAGE MEDIA & STORAGE DEVICES

BASIC TERMS: Recording or saving data future use. Store/Save device that holds the data or information. Storage Media

KINDS OF STORAGE MEDIA A. 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 Disks stores data on a flexible circular disk covered with a thin layer of magnetic oxide. This is commonly known as floppy-disk or diskette 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 MEDIA CAPACITY H O W M A Y L E T T E R S W I L L T H E R E B E I N 1 G B ?

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 MediaCapacity 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 MediaCapacity 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?