It is like something written on sand which is temporary and would be erased.
It is like something written on stone that cannot be removed or changed once written.
4.
It is temporary memory, also called volatile memory.
It is permanent storage devise and data remains safe on ROM even when computer is off also called non-volatile memory.
5.
RAM stores information which is currently processed by computer. When power off, it loses all the information. Data can be read, stored, modified or delete from the RAM.
It contains information related to computer startup process which is written at the time of memory manufacturing
6.
volatile memory
non-volatile memory
7.
It is a high-speed memory.
It is much slower than the RAM.
8.
Large size with higher capacity. 1 to 256 GB per chip
Small size with less capacity. 4 to 8 MB per chip
9.
Types: Static RAM, Dynamic RAM
Types: Programmable ROM (PROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Mask ROM,
