Changing the way you learn

1.2 memory

cache
1. frequently used data
  1. next time that data is used it will be served faster
2. bigger cache size more storage
3. hardware or software compoment
4. located in the processor
RAM
1. random access memory
2. form of storage for computer data
  1. stores data that is currently being used
3. DRAM
  1. dynamic random access memory
  2. type of RAM
  3. stores bits of data in a separate capacitor
    1. this in a integrated circuit
4. volatile
  1. memory is lost when the computer is switched off
  2. this is data that is not saved when the computer is turned off
5. SRAM
  1. static random access memory
    1. retains data bits in its memory as long power is being supplied
ROM
1. read only memory
2. non-volatile
  1. storage that can retrieve information after the computer has been switched off
virtual memory
1. this is simulated memory that is written memory to a file on a hard drive
2. this needed to run programs as sometimes the RAM cannot support it and is more memory to be used
solid state
1. storage media with no moving parts or a device that used flash
flash
1. Flash memory is solid state memory
2. can be used to transfer data
peripherals
disk thrashing
1. moving data back and forth
  1. data being moved from virtual memory to RAM and then to cache
disc thrashing

1.2 memory

	Created by Joshua Rose over 6 years ago