Which of the following is an essential role of ROM in a computer system?

Correct option is C

ROM (Read-Only Memory) plays an essential role in a computer system by storing data permanently for boot-up processes. It contains the firmware or BIOS, which is responsible for initiating the system and performing self-tests during the boot-up process. Since ROM is non-volatile, its data is not lost when the computer is powered off.
Important Key Points:
1. Non-Volatile Memory: ROM retains data even when the system is powered off, making it ideal for storing critical startup instructions.
2. Boot-Up Process: ROM stores the BIOS or firmware, which is necessary to start the computer, check hardware functionality, and load the operating system.
3. Data Security: The data in ROM cannot be easily altered, ensuring the stability and reliability of the boot-up instructions.
Knowledge Booster:
· Storing files created by the user: User-created files are typically stored in secondary storage, such as hard drives or SSDs, not ROM.
· Performing calculations: Performing calculations is typically handled by the CPU, not ROM.
· Storing data temporarily: Temporary data storage is handled by RAM (Random Access Memory), not ROM.