1.2 Memory Flashcards
To not fail computing
Volatile
Memory which requires constant electrical
charge. If the power is turned off, then the data
is lost.
Non-volatile
Memory which can retain its data when the power is turned off.
RAM
Is volatile. Needs a constantly recycled charge to keep hold if it’s data. Used to store currently used data.
ROM
Non volatile. Data is hardcoded by the manufacturer and cannot be overwritten. It stores the instructions needed for the computer to start up..
Cache
Very fast memory, on, or very close to the CPU.
Virtual Memory
A section of the HDD which can be used as RAM for very memory intensive processes.
Flash Memory
A type of dynamic (changeable) ROM.
Boot Process
The instructions needed to start the computer and to initialize the operating system.
POST
Power On Startup Test A series of checks done on the hardware of the computer to ensure the machine can run.