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ROM stands for Read Only Memory.

The ROM is non-volatile memory;it retains stored information even if the power is turned off (unlike RAM).This is basically used for storing programs and data that need not be altered one stored.

Processor uses ROM to store and execute programs instructions.However it is a type of prime memory and not a storage memory,therefore don't compare it with Hard Disks or CDs and DVDS etc

As the name itself suggests,the information can only be read not deleted,altered or even overwritten.This means that once a bit pattern is stored ,it is permanent or at least semi-permanent (if supports alteration).

The permanent groupincludes two types ,viz. ,ROM and PROM (Programmable ROM).

The semi-permanent also includes two types ,namely,EPROM (Erasable PROM)and EE-PROM (Electrically Erasable PROM). ROM contains the programming that allows your computer to be "booted up" or regenerated each time you turn it on. Unlike a computer's random access memory (RAM ), the data in ROM is not lost when the computer power is turned off. The ROM is sustained by a small long-life battery in your computer.

If you ever do the hardware setup procedure with your computer, you effectively will be writing to ROM.

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12y ago

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