Random Access Memory (RAM) is one of the two types of main memory found in computers. General purpose computers usually contain a large amount of RAM. The features of RAM are:
Read Only Memory (ROM) is another type of main memory found in computers. It comes on a small, factory made chip in the motherboard. Features of ROM include:
Read only - ROM is often made from flash memory. This means that it's contents cannot be changed easily. This means that the ROM only stores small programs that boots or starts up the computer. These programs are called the Basic Input Output System (BIOS). They usually:
Flash memory is usually based on a technology called Electrically Erasable Programmable Read-Only Memory (EEPROM). EEPROM can be used to create many flash memory devices:
Solid State Drives (SSD)
Secure Digital (SD) cards
Properties of Flash Memory
Flash memory is a type of memory technology that can be used to create primary or secondary storage. It is commonly used to make Read-Only Memory (ROM), and Solid State Drives (SSDs).
Virtual Memory is a technique where we use secondary storage as if it were RAM.
How Virtual Memory Works
Virtual Memory allows us to access more memory than we have by setting aside some secondary storage space to act as extra memory.
Move pages to Hard Disk Drive (HDD)
Move pages to RAM
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