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