EPROM
nonvolatile memory chip comprising an array of floating-gate transistors individually programmed by an electronic device that can be erased, e.g. by exposure to strong UV light From Wikipedia, the free encyclopedia
An EPROM (rarely EROM), or erasable programmable read-only memory, is a type of memory chip. Unlike a normal programmable read-only memory (PROM), this type of chip can have its information cleared and written again.
EPROMs are cleared by shining ultraviolet light on the clear opening on their top. Some EPROMs can be cleared using only electricity instead of needing ultraviolet light. These are called EEPROMs (standing for electrically erasable programmable read-only memory).
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