53. What characteristic of read-only memory (ROM) makes it useful?
Verified Answer
A. ROM information can be easily updated
B. Data in ROM is nonvolatile, that is, it remains there even without electrical power
C. ROM provides very large amounts of inexpensive data storage
D. ROM chips are easily swapped between different brands of computers
E. None of these
Explanation:
ROM's usefulness stems from its 'nonvolatile' nature, retaining data without power, crucial for boot instructions. It's generally not easily updated, doesn't offer large storage, and chips aren't easily swapped due to compatibility. Thus, nonvolatility is key.