EPROM

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Definition

Noun: - A type of non-volatile computer memory chip that can retain stored data even when power is removed. It is a read-only memory (ROM) that can be erased by exposure to strong ultraviolet light and subsequently reprogrammed with new data.

Usage
  • The term is used primarily in computing and electronics contexts to describe a specific, reusable type of memory hardware.
  • It is often discussed in relation to firmware storage, device programming, and legacy computer systems.
Examples
Advanced Usage
  • EPROM programmer: A hardware device used to write data to an EPROM chip.
  • Windowed EPROM: An EPROM chip with a transparent quartz window on its package, allowing the internal silicon die to be exposed to UV light for erasure.
Variants and Related Words
  • EEPROM (Electrically Erasable Programmable Read-Only Memory): A later development that can be erased and reprogrammed electrically, without the need for UV light.
  • PROM (Programmable Read-Only Memory): A one-time programmable memory chip. An EPROM is a type of PROM that is erasable.
  • Flash memory: A further evolution of EEPROM technology, allowing blocks of memory to be erased and rewritten.
Synonyms
  • Erasable programmable memory
  • UV-erasable ROM
Notes
  • EPROM is an acronym for "Erasable Programmable Read-Only Memory."
  • While "read-only" is part of its name, its key characteristic is being after a full erasure, distinguishing it from mask ROMs which are permanently programmed during manufacture.
Noun
  1. (computer science) a read-only memory chip that can be erased by ultraviolet light and programmed again with new data

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