1.2 memory

1.2 memory

1. cache

   • frequently used data
     • next time that data is used it will be served faster
   • bigger cache size more storage
   • hardware or software compoment
   • located in the processor

2. RAM

   • random access memory
   • form of storage for computer data
     • stores data that is currently being used
   • DRAM
     • dynamic random access memory
     • type of RAM
     • stores bits of data in a separate capacitor
       • this in a integrated circuit
   • volatile
     • memory is lost when the computer is switched off
     • this is data that is not saved when the computer is turned off
   • SRAM
     • static random access memory
       • retains data bits in its memory as long power is being supplied

3. ROM

   • read only memory
   • non-volatile
     • storage that can retrieve information after the computer has been switched off

4. virtual memory

   • this is simulated memory that is written memory to a file on a hard drive
   • this needed to run programs as sometimes the RAM cannot support it and is more memory to be used

5. solid state

   • storage media with no moving parts or a device that used flash

6. flash

   • Flash memory is solid state memory
   • can be used to transfer data

7. peripherals

8. disk thrashing

   • moving data back and forth
     • data being moved from virtual memory to RAM and then to cache

9. disc thrashing