The full form of ROM is Read Only Memory.

Quick Scoop: What is ROM?

Think of ROM as the built‑in memory in a device that holds essential instructions that rarely or never change.

  • ROM = Read Only Memory.
  • It is non‑volatile memory, meaning data is not lost when the power is switched off.
  • It is mainly used to store firmware (the low‑level software that helps devices start and function, like the code that runs when you power on a computer or phone).
  • Data in traditional ROM is written once and generally cannot be modified later, only read.

Mini example

When you press the power button on your computer and it knows how to start loading the operating system, those startup instructions are stored in ROM as firmware.

TL;DR:
The full form of ROM is Read Only Memory , a non‑volatile memory chip that stores permanent or rarely changed instructions (firmware) needed for a device to start and operate.

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