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storage by Mind Map: storage

1. A storage medium

1.1. the physical material on which a computer keeps data,instuctions, and information

2. A storage device

2.1. the computer hardware that records and/retrieves items to and from storage madia

2.1.1. reading

2.1.2. writing

3. hard disks

3.1. capacity

3.2. platters

3.3. read & write Heads

3.4. cylinders

3.5. sectors and tracks

3.6. revolutions per Minute

3.7. transfer rate

3.8. access time

4. flash memory storge

4.1. a memory card

4.2. USB flash drives

4.3. an expressCard module

4.4. developed by the PCMCIA

4.5. commonly used in notebook

5. optical discs

5.1. CD- ROM

5.2. CD-R

5.3. CD-RW

5.4. New node

6. other types of storage

6.1. tape

6.2. smart card

6.3. microfilm&microfiche

6.4. enterprinse storage