ROM

 

 ROM (Read Only Memory)

 ROM stands for Read-Only Memory, which is a type of computer memory that can be read from, but not written to or modified. This type of memory is used to store permanent data, such as the computer's firmware (the basic software that controls the hardware), and is typically found on motherboards, video cards, and other components.

 One of the key features of ROM is that its contents are permanent and cannot be altered, even if the computer is turned off or experiences a power outage. This makes ROM ideal for storing critical system information, such as the computer's basic input/output system (BIOS), which is used to control the hardware and provide a basic set of instructions for booting the computer.

 There are several different types of ROM, including mask ROM (which is manufactured with the data permanently programmed into the chip), PROM (Programmable Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), and EEPROM (Electrically Programmable Read-Only Memory).