What is ROM in Computer?

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Definition of ROM

“Read Only Memory” is the full form of ROM. A ROM performs read-operation only, it can’t be written into. The information stored in a ROM is permanent. It can’t be altered by addition or erasing. So it is called ‘Non Volatile Memory’. The important data should be stored into ROM. Example – BIOS stored in ROM. The function of “Basic Input Output System” is to control the primary activities of a computer.


The Function of ROM

The functions of ROM are given below-
1) Standard programs and data that are frequently used by program.
2) Special purpose of program. such as- Boot strap loader.

Classification of ROM

ROM is classified into four categories. They are given below-
1) PROM– Programmable Read Only Memory.
2) EPROM– Erasable Programmable Read Only Memory.
3) EEPROM– Electrically Erasable Programmable Read Only Memory.
4) UVPROM– Ultra Violet Programmable Read Only Memory.

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