Rom (Read Only Memory) is a storage device that is used in computers and other devices. The data it contains is specific to the device that it is intended for, therefore ROM is memory that cannot be changed. Some modern types of ROM known as EPROM and EEPROM can be erased or reprogrammed, but after doing so, it cannot be changed. However it is very slow and sometimes it cant be saved to any memory location so as of 2007, it is rarely used.
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