Memory

Memory

1. ROM

   • Read Only Memory
     • Performs the 'bootstrap' which is the first piece of code that runs when a machine starts, and is responsible for loading the rest of the operating system.

2. RAM

   • Random Access Memory
     • When programmes and data are being executed they are stored in RAM

3. Virtual

   • Instructions that aren't being used are transferred to the hard disk.
     • To be executed, instructions must be transferred back to the RAM.

4. Volatile

   • Power must be supplied for data to be maintained

5. Non-volatile

   • Power does not have to be supplied for data to be maintained

6. Flash Memory

   • Can be used as an alternative to a hard drive
   • It is read write and retains data when power is not supplied
   • Commonly used when settings need to be saved
   • Can be used as a secondary storage as an alternative to a hard drive
   • Expensive