Question:
Which of the following is a type of ROM that can be programmed only once?
Which of the following is a type of ROM that can be programmed only once?
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Remember the evolution of programmable memory: PROM (write once), EPROM (erase with UV light), EEPROM (erase with electricity), and Flash (a faster type of EEPROM).
Updated On: Jul 2, 2026
- PROM
- EPROM
- EEPROM
- Flash Memory
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The Correct Option is A
Solution and Explanation
Let's define the different types of Read-Only Memory (ROM) listed:
(A) PROM (Programmable Read-Only Memory): This type of memory can be written to (programmed) exactly once by the user with a special device called a PROM programmer. After it is programmed, the data cannot be changed.
(B) EPROM (Erasable Programmable Read-Only Memory): This memory can be erased by exposing it to strong ultraviolet (UV) light and then reprogrammed.
(C) EEPROM (Electrically Erasable Programmable Read-Only Memory): This memory can be erased and reprogrammed electrically, without being removed from the circuit.
(D) Flash Memory: A specific type of EEPROM that is erased and written in blocks, making it faster. It's widely used in USB drives and SSDs.
The type of ROM that can be programmed only once is PROM.
(A) PROM (Programmable Read-Only Memory): This type of memory can be written to (programmed) exactly once by the user with a special device called a PROM programmer. After it is programmed, the data cannot be changed.
(B) EPROM (Erasable Programmable Read-Only Memory): This memory can be erased by exposing it to strong ultraviolet (UV) light and then reprogrammed.
(C) EEPROM (Electrically Erasable Programmable Read-Only Memory): This memory can be erased and reprogrammed electrically, without being removed from the circuit.
(D) Flash Memory: A specific type of EEPROM that is erased and written in blocks, making it faster. It's widely used in USB drives and SSDs.
The type of ROM that can be programmed only once is PROM.
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