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EPROM
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NMOS circuit implementation of (A) a DRAM cell, (B) an SRAM cell, and (C) an EPROM transistor, where the charge is stored on the floating gate. The address line selects the cell to be written or read, and the memory-state information is sensed on the bit line(s).
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computer chip. computer. Hand holding computer chip. Central processing unit (CPU). history and society, science and technology, microchip, microprocessor motherboard computer Circuit Board
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EPROM

computer memory
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Also known as: erasable programmable read-only memory
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In full:
erasable programmable read-only memory

EPROM, form of computer memory that does not lose its content when the power supply is cut off and that can be erased and reused. EPROMs are generally employed for programs designed for repeated use but that can be upgraded with a later version of a program. EPROMs are erased with ultraviolet light. The capabilities of EPROMs were extended with EEPROM (electrically erasable programmable read-only memory); flash memory, which is extensively used in computers in the early 21st century, is an EEPROM.

The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Erik Gregersen.