Read Only Memory


ROM is "built-in" computer memory containing data that normally can only be read, not written to. ROM contains the programming that allows your computer to be "booted up" or regenerated each time you turn it on. Unlike a computers random access memory, 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.

How does ROM work?

ROM is essential to your computer. Its also known as firmware. ROM chips are used for many devices an=s well as computers. There are 5 types of ROM: ROM, PROM, EPROM. EEPROM and flash memory. The data stored in ROM chips are not lost when the power is removed. Unlike Ram, you can't change the data that is stored in it. ROM has loads of grids and columns just like RAM.

Example of ROM

An example of ROM in a computer is BIOS (a set of computer instructions which control input and output operations) which is a PROM chip that stores programming so it can start up the computer. ROM chip is mostly stored in gaming consoles like the original nintendo and gaming consoles. However, ROM is still being used today and is constantly being improved for better performance.