Storage Devices and Media 1
- Created by: Rianne B
- Created on: 31-10-13 20:19
View mindmap
- Storage
- Read Only Memory (ROM) - Chip, cannot be altered by user, contents retained when power removed.
- Random Access Memory (RAM) - Chip, read and write, can be altered by user, contents lost when power removed
- Units of memory - 1 ASCII character = 1 byte. 1,000 bytes = 1 kilobyte. 1,000,000 bytes = 1 megabyte. 1,000,000,000 bytes = 1 gigabyte. 1,000,000,000,000 bytes = 1 terabyte.
- hard drive - cheap, large storage capacity, can fail, prone to damage
- CD/DVDs/Blu-ray - light, portable, cheap to produce, easily scratched/damaged, limited storage space
- Zip Drive - sturdy, durable for long term use, disks are expensive, portable drive required
- Magnetic Tap - cheap, large storage space, sturdy, durable for long term use, slow at reading and writing data, requires tape streamer
- Memory Sticks - small, light, portable, large storage size, easy to break, data can be lost
- Solid Stater Disks - lower failure rate, faster access to storage, quieter, expensive, slower to write
- Online storage - large files can be stored and shared, reliance on company to keep data secure
Comments
Report