what is rom

ROM stands for Read-Only Memory, which is a type of computer storage containing non-volatile, permanent data that can only be read, not written to. It is an essential part of any computer or electronic device as it stores instructions necessary for initializing hardware components and loading the operating system. ROM is used to store important information that is used to operate the system, and it is also known as permanent memory. The information stored in ROM is written to individual cells using binary code, and it is programmed with certain data during the time of manufacture. ROM is a non-volatile form of memory that stores data permanently and cannot be written over or erased. It can only be read from, which makes it ideal for use in computers because it allows them to access information quickly without having to constantly write and rewrite data. ROM is used to store data that is not expected to need modification for the life of the device, such as look-up tables for the evaluation of mathematical and logical functions.