1. Storage Device
1.1. A storage device is the computer hardware record and/or retrieves items to and from storage media
1.1.1. Writing
1.1.1.1. Reading is the process of transferring items from a storage medium into memory.
1.1.2. Reading
1.1.2.1. Writing is the process of transferring items from memory to a storage medium.
1.1.3. Access time
1.1.3.1. The time required to deliver an item from memory to the processor.
1.1.3.2. Th amount of time it take a storage device to locate an item on a storage medium.
2. Capacity
2.1. Kilobyte (KB) 2^10
2.2. Megabyte(MB) 2^20
2.3. Gigabyte (GB) 2^30
2.4. Terabyte (TB) 2^40
2.5. Petabyte (PB) 2^50
2.6. Petabyte (PB) 2^60
2.7. Zettabyte (ZB) 2^70
2.8. Yottabyte (YB) 2^80
3. Hard Disk
3.1. A hard disk contains one or more inflexible,circular platters that use magnetic particle to store data,instructions,and information
3.2. Characteristic of Hard Disk
3.2.1. Platters
3.2.2. Capacity
3.2.3. Cylinders
3.2.4. Tranfer Rate
3.2.5. Access Time
3.2.6. Read/Write Heads
3.2.7. Sectors and Tracks
3.2.8. Revolution per Minute
3.3. Kind of Hard Disk
3.3.1. External Hard Disk
3.3.2. Removable Hard Disk
3.3.3. Internal Hard Disk
4. Flash Memory Storage
4.1. Solid State Drives (SSDs)
4.2. Memory Card
4.2.1. Compact Flash (CF)
4.2.2. Secure Digital (SD)
4.2.3. Secure Digital High Capacity (SDHC)
4.2.4. microSD
4.2.5. microSDHC
4.2.6. xD Picture Card
4.2.7. Memory Stick
4.2.8. Memory Stick Micro (M2)