How is data typically erased from an EPROM?

Question

Question

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RRB JE CBT 2 (Electronics Engineering) ReExam Official Paper (Held On: 04 Jun, 2025)

Answer 1

The correct answer is option: By exposure to ultraviolet (UV) light

Key Points

The data stored in EPROM chips can be erased, and the chip can be reprogrammed. This is achieved by exposing the chip to an intense Ultraviolet (UV) light through a specially designed window in the chip.
The process of erasing the data with UV light makes EPROM a reusable and flexible choice in hardware that needs occasional data updates.
An EPROM (Erasable Programmable Read-Only Memory) is a non-volatile memory, meaning it can retain its data even when the power supply is switched off.
EPROMs are used to store data, like system software, that needs not be changed frequently.
They have been extensively utilized in computers and other devices where permanent storage is essential.
In many security systems, EPROMs are used to hold both the operating system and the program for the access control panel.