1.2 Memory

1.2 Memory

1. RAM is volatile, meaning it looses data.

   • faster than most memory but costs more
   • only data currently in use
   • more RAM improves the performance of the computer
   • more RAM improves performance of the computer

2. ROM is non volatile meaning it doesn't loose its data when turned off

   • Firmware is a permanent software programmed into ROM

3. virtual memory is like RAM and is on a hard drive

   • It is only temporary
   • it is slower than Ram as RAM is more direct
   • its used when RAM is full up on memory

4. BIOS: basic input/output system, contains programs that load the hardware

   • ROM contains BIOS as it needs to start the program when it is turned off

5. solid state

   • hard disk drive
     • some parts are in order for it to work
     • often seen in computers
   • no moving components
   • hard disk drive
     • parts of it move in order for it to work, often seen in computers.
   • no moving components needed to operate

6. flash memory

   • hard disk- magnetic storage that holds files and programs

7. cache

   • stores frequently used data and instructions
   • accessed quicker than normal RAM as it is closer to the processor
   • can't hold much

8. registers

   • holds a small set of data that is currently in use

9. Volatile and Non Volatile

   • Volatile: data is emptied when the power is turned off
   • Non Volatile: Data is not lost when power is turned off