ROM, is Read Only Memory. It is a secure chip on which the manufacturers have burned data the computer needs in order to boot up the Operating System. It is not affected on losing power. RAM, on the other-hand, is Random Access Memory, and is very volatile, losing any data held in memory on powering down.
ROM is typically not erased. RAM will be lost of it does not receive some secondary form of power, such as a battery.
ROM isn't erased when you turn the power off, whereas RAM is.
"Permanent" memory is called ROM. ROM stands for Read Only Memory. Under normal circumstances, ROM can not be modified or erased, even if the computer loses power.
Rom
A standard ROM or PROM cannot be erased, only erasable PROM can be erased. It is done with either UV light or electronically depending on the type of EPROM.
Read Only Memory or ROM. There are also Erasable ROMs called EPROMs, EAROMS, EEROMS, and Flash Memory. The erasable ROMS will only be erased under special circumstances, and when in use they act the same as a normal ROM.
ROM is involatile because its name means Read Only Memory, hinting that the data stored on it cannot be altered. The word involatile means long term and not changeable.
CD rom means: Compact Disc-Read-Only MemoryIt's a disk that cannot be erased, only read.
Flash EPROM
eprom (erasable programmable read only memory )
No. However there are forms of ROM that can be changed, like Programmable Read Only Memory (PROM) and Erasable Programmable Read Only Memory (EPROM).
An EEPROM chip
Rom :- Read Only Memory. The storage of data and instructions in Rom is permanent. It does not depend on the power supply. The memory which does not lose its content when power is turned off is known as non-volatile memory. There are three types of Rom :- Prom = Programmable read only memory Eprom= Erasable Prom EEprom=Electrically erasable prom