Storage Devices

Magnetic devices

Optical Devices

Solid State Devices

Amazon warehouse

Wal-mart warehouse

Small Press Warehouse

Performance related specs.

• Access Speed or Access Time• Capacity• Life-time• Price per byte

Poster Activity

Store, to store and storage

• I have stored my pictures in a CD.• I have to go to the store.• Your storage device isn’t working, so you need

to get a new one. • Storage is an adjective• Store can be a noun.• Store can be a verb, to store.

Byte? Bit?

• 1 Byte = 8 bits• 1 Byte = 10101010• We use byte to represent characters.• So, if one byte is character A, then the

computer would see it like the following 8 bits 01 00 00 01.

Bytes, KB, MB, GB and so on...

• Bytes• 1 Kilobyte = 1000 Bytes• 1 Megabyte = 1,000 KBs• 1 Gigabyte = 1,000 MBs• 1 Terabyte = 1,000 GBs• 1 Petabyte = 1,000 TBs• 1 Exabyte = 1,000 PBs• 1 Zettabyte = 1,000 EBs• 1 Yottabyte = 1,000 ZBs

How do we measure capacity?

• One word: Capacity.• With 160GB of storage and up to 36 hours of music

playback,2 iPod classic lets you enjoy up to 40,000 songs or 200 hours of video wherever you go.1

Each song average weights 4 MB or 0.004GB

1 Actual capacity varies by content.

Global data storage calculated at 295 EBs

• Mankind's capacity to store the colossal amount of information in the world has been measured by scientists.

• The study, published in the journal Science, calculates the amount of data stored in the world by 2007 as 295 exabytes.

• http://www.bbc.co.uk/news/technology-12419672

Digital content universe to be over 1 Zettabyte in 2010

• The total amount of data stored in the world’s computers, will surpass a zettabyte.

• In just ten years’ time, the Digital Universe will grow by a factor of 44 to reach 35 zettabytes in 2020.