Question

Which ROM can be erased by an electrical signal?

(a) ROM

(b) Mask ROM

(c) EPROM

(d) EEPROM

I had been asked this question in class test.

I'm obligated to ask this question of Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits

Answer 1

Correct answer is (d) EEPROM

Best explanation: In EPROM (Erasable Programmable ROMs), the ROM is cleared by exposing it to UV radiation and also it’s a tedious process. Whereas, in EEPROM, the ROM can be cleared electrically and thus is less time consuming and more efficient.