What is erasable programmable read-only memory?

Erasable programmable read-only memory (ROM), invented by Israeli engineer Dov Frohman, is a computer memory chip that retains data after a power outage-that is, non-volatile (non-volatile). It is a set of floating-gate transistors that are individually programmed by an electronic device that provides a higher voltage than is commonly used in electronic circuits. Once programmed, the EPROM can only be erased by irradiation with strong ultraviolet light. EPROM is easily recognized through a transparent window on the silicon wafer visible at the top of the package, which is also used for UV erasure.

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