There are two types of memory access.

1- uniform memory access (uma)

2- non-uniform memory access (numa)

• Non Volatile RAM (NVRAM) Memory Device
• Read Only Memory (ROM) Memory Device
• Random Access Memory (RAM) Memory Device

There is:- Random Access Memory (RAM),

Read-Only Memory (ROM),

Flash Memory (CMOS Chip),

non-volatile memory (Hard Drive).

It is the NVRAM or the Non-Volatile Random Access Memory.

Volatile memory is computer memory that requires power to maintain the stored information. Non-volatile random-access memory that retains its information when power is turned off. There is random access memory, cache memory, read only memory, virtual memory and flash memory.