read-only storage

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read-only storage

A computer uses read-only storage to boot its operating system.

Definition

Noun: * (Computer Science) Memory whose contents can be accessed and read but cannot be changed: A type of computer memory or storage device where data is permanently stored during manufacturing. The information can be retrieved (read) by a computer but cannot be modified, overwritten, or erased by normal computer operations.

Usage
  • This term is used to describe a fundamental type of non-volatile memory in computing.
  • It is often discussed in contrast to read-write storage (like RAM or hard drives).
  • It is commonly abbreviated as ROS or, more frequently, ROM (Read-Only Memory).
Examples
Advanced Usage
  • Firmware: Software that is permanently programmed into a hardware device, often residing in read-only storage.
    • The router's firmware is burned into its read-only storage chip.
  • The concept is sometimes metaphorically used to describe information that is fixed and unalterable.
    • The ancient text was like read-only storage for their cultural laws.
Variants and Related Words
  • ROM (Read-Only Memory): The most common synonym and abbreviation for read-only storage.
  • Mask ROM: A type of ROM where data is physically encoded during the chip's manufacturing.
  • PROM (Programmable Read-Only Memory): A type of ROM that can be programmed by the user once.
  • EPROM (Erasable Programmable Read-Only Memory): A type of ROM that can be erased with ultraviolet light and reprogrammed.
  • EEPROM (Electrically Erasable Programmable Read-Only Memory): A type of ROM that can be erased and rewritten electrically.
Synonyms
  • Non-volatile memory: Memory that retains data without power (a broader category that includes ROM).
  • Fixed storage: Emphasizes the unchangeable nature of the data.
  • Firmware storage: Highlights the common use case for holding firmware.
Antonyms
  • Read-write storage / memory: Storage that allows data to be both read and modified (e.g., RAM, flash drives, hard disk drives).
  • Volatile memory: Memory that loses its contents when power is removed (e.g., RAM).
read-only storage

A computer uses read-only storage to boot its operating system.

Noun
  1. (computer science) memory whose contents can be accessed and read but cannot be changed

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