1.2 memory Flashcards
RAM
(random access memory) it is a volatile memory source that is used as the main memory and can be read and written.
ROM
(read only memory) non-volatile memory that can only be read not written into.
virtual memory
when the RAM is filled up the computer puts the not recently used data onto the secondary which is slower but frees up space on the RAM.
volatile
temporary memory that requires power to retain the data
non-volatile
permanent memory that keeps its contents even when it has no power.
primary storage
the memory areas that the CPU can access very quickly and has the fastest read/write speeds.
secondary storage
non-volatile storage where all data is stored when not in use.
SRAM
(static random access memory) faster access to memory. volatile. does not have to be refreshed.
DRAM
(dynamic random access memory) has to be refreshed or the info will fade.
BIOS
(basic input/output system) the program the computer uses to get the system started after you turned it on.
firmware
its what communicates with computer devices and peripherals in their language.
disk thrashing
when data is being swapped in and out of the virtual memory it leads to a high rate of disk access.
flash memory
non-volatile storage usually used in USB because it can hold the memory for a long time and is small.
hard disk
part of a unit that provides quick access to large amounts of data.