Computer Memory & Memory Adressability

8 Dec

Computer Memory:

  • Main memory – This is temporary storage of programs and files called RAM held on chips.
  • Backing storage – This is known as secondary memory and is not part of main memory.

 Computer Addressability:

This is the way the computer identifies each memory location within main memory.  Each locaton has a unique address so they are easy to find.

The size of the address bus determines how many memory locations can be accessed for example:

1 bit = 2 locations

To calculate the addressable memory of a computer we mulitply the number of storage locations by the size of each location.

The 5 main types of memory:

  • RAM
  • ROM
  • Cache
  • Registers
  • Virtual

 

 

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