ROM, also known as Read Only Memory, is a storage unit used in computers. It is usually used to distribute firmware which is closely associated with specific hardware, and requires infrequent updates. The memory is hard wired and can only be modified slowly, if at all.
Flash Memory
secondary memory
Declarative memory is also known as explicit memory. It refers to the memory system that involves the conscious recollection of facts and events. This type of memory can be further subdivided into semantic memory (knowledge of facts and concepts) and episodic memory (memory of specific events and experiences).
When you are browsing the internet, pictures can be downloaded to memory stick from the page options. Also, if your firmware is updated fully, you can download things from the Playstation Network.
frm
Random Access Memory is also known as the Main Memory or the Internal Memory.
Since primary memory is not sufficient to store large volumes of data, externally some memory is added.this is known as hard disk which is also known as secondary memory
Pages
Virtual Memory-: Virtual Mem is also known as Swap memory. Swap memory:- Swap mem is the type of memory which allocates by the harddisk in the form of extra RAM for better functioning of the application in the case if you are facing a lack of RAM in order to run that software
Eidetic memory, also known as photographic memory and total recall, is the ability to recall sounds, images or objects in memory with extreme precision.
Firmware refers to programs that are fixed, low-level operations. Since the BIOS is hard coded on a chip, it can be classified as firmware.