EPROM

From Saferpedia

An EPROM (Erasable P'rogramable Read Only Memory) memory is a kinf o memory that keeps data even wen the power supply is shut down. It's a non volatile memory.

ERPOMs are in fact a series of panels with transistors (logical gates) individually programmed by an electronic device supplying higher voltages than the common ones used in digital circuits.

An EPROM can be erased only by exposing it to strong UV light. EPROMs are easy to recognize by the small window of melted quartz on its upper side. The silicon chip is visible trough this window in order to allow the exposure to UV light.

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