RAM
Volatile
Cabin be written and read from.
Usually measured in gigabytes
ROM
Non- volatile
Read from.
For the BIOS usually measured in kilobytes.
Virtual memory
Stores data that the RAM isn’t actively using on the hard drive to free up RAM.
Cache
Holding area for data from the RAM
Flash
Often referred to as solid-state storage, which means that there are no moving parts.
Non-volatile.
Used in USB memory sticks and Memory cards for suicidal cameras, ect