ROM is nonvolatile, meaning it does not require constant power to function. ROM contains essential system programs that neither the user nor the computer can erase. Since the computer's internal memory is blank during start-up, the computer cannot perform any functions unless given start-up instructions.

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ROM is nonvolatile, meaning it retains its contents even when the power is turned off. It contains essential system firmware or boot-up instructions that are used when a computer is turned on, enabling the computer to load the operating system and start up.

ROM Is Nonvolatile, Meaning It Does Not Require Constant Power