Page 6 - Digi Notes : Computer - 01.12.2015

ROM (Read Only Memory)

ROM is also a type of non-volatile storage which is located on the
motherboard that contains the basic instructions for what needs to

happen when a computer is powered on.

PROM

Programmable read-only memory (PROM) is read-only memory (
ROM ) that can be modified once by a user.

EPROM

Acronym for erasable

programmable read-only memory,
EPROM is a special type of memory that retains its contents until it is

exposed to ultraviolet light.

EEPROM

Short for electrically erasable

programmable read-only memory.
EEPROM is a special type of PROM that

can be erased by exposing it to an electrical charge.