Multiple choice

Can a programmable read only memory (PROM) be programmed by the user using PROM programmer or not?

  1. Only once by the user.

  2. Cannot be programmed by the user.

  3. It can be programmed again and again.

  4. Its programming is fixed by the vendor.
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A Correct answer
Explanation

PROM (Programmable Read-Only Memory) can be programmed by the user exactly once using a PROM programmer. During programming, fuses are blown to create the desired pattern. Once programmed, it cannot be reprogrammed - this is why it's called 'one-time programmable'.

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