memory

memory

1. ROM

   • ROM is non-volatile , meaning that the content is stored even when the computer is switched off
   • ROM stands for read only memory
   • ROM's purpose is to store the instructions which are needed to 'boot up' the computer

2. RAM

   • RAM stands for random access memory
   • RAM is volatile, meaning that the data is not stored when the computer is switched off
   • RAM's purpose is to store store the insructions and data that are needed while programs are being used

3. virtual memory

   • virtual memory is volatile, meaning that the data is not stored when the computer is switched off
   • virtual memory's purpose is to store data that can not be stored in RAM when its full.
   • virtual memory is secondary storage and is stored in a hard drive