Circular
Hexagonal
Rectangular
Quadrilateral
Magnetic Disks
Compact Disks
Magnetic Tapes
Semiconductor Memories
Memory
Portable
Open
Paste
1
2
4
8
Auxiliary memory
Cache memory
Main memory
Virtual memory
R Card
RW Card
RAM drive
Flash drives
Temporary
Nonpermanent
Nonvolatile
Flash
Faster and less expensive
Faster and more expensive
Slower and less expensive
Slower and more expensive
Company
Individual
City
Department
Flash RAM
Flash ROM
Flash DRAM
Flash DROM