690630
Description
Secondary Storage
- Stores data and programs when
the power is switched off
- Magnetic Hard Disk
- Stores the operating system, installed programs and user data
- Reliable
- High capacity
- Low Cost
- Stores the operating system, installed programs and user data
- Optical Disk
- Transfers files or distributing software
- Good capacity
- Low cost
- Lightweight and portable
- A CD can store 700 MB
and DVD can store 4.7 GB
- Transfers files or distributing software
- Flash Memory
- Consumes little power
- Good capacity (but less than a hard disk)
- Used in hand held devices
- More expensive than a hard disk
- Consumes little power
- Main considerations when selecting storage
- Capacity
- Speed of data transfer
- Portability
- Durability (how easily it's damaged)
- Reliability
- Capacity
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