Memory & Storage

Memory & Storage

1. ROM (Read only memory)

   • Non-Volatile
   • Directly connected to CPU
   • Stores permanent instructions
   • 6 - 8 MB

2. RAM(Random access memory)

   • Volatile
   • Read/Write
   • Holds data that is currently being used
   • 1 - 256 GB
   • Performs better more RAM as faster processing

3. Virtual Memory

   • Used as a temporary form of RAM if RAM is full

4. Secondary Storage

   • Solid State Storage
     • USB drive
     • Faster read/write than magnetic & optical
   • Optical Storage
     • Data written/read by lasers
       • Pits=0 Lands=1
     • CD/DVD
     • Small in capacity
   • Magnetic Storage
     • Magnetized = 1 Demagnetized = 0
     • Hard disc drive
   • long-term storage of data

5. Flash Memory

   • Easy & fast info storage
   • Used in computers, Digital Cameras, Home Video Game Consoles