Which type of read-only memory (ROM) can be erased and reprogrammed using electrical voltage signals without exposure to ultraviolet light?
Answer and explanation
Correct answer: B. EEPROM
- Step 1: Early programmable ROM required physical removal and UV chamber irradiation (EPROM) to reset floating-gate transistor states.
- Step 2: Electrically Erasable Programmable ROM (EEPROM) applies electrical field emissions to erase and reprogram byte locations while remaining soldered on the circuit board.
Answer
EEPROM
Why not the others: 'EPROM' EPROM requires prolonged exposure to intense ultraviolet (UV) light through a transparent quartz window to erase stored charge; 'PROM' Mask PROM or field-programmable PROM is written permanently once by blowing internal microscopic fuses and cannot be erased; 'Mask ROM' Mask ROM is hard-wired at the silicon fabrication foundry during wafer production and cannot be altered.
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