firmware

embedded software / hardware control code

Noun

This term describes the bridge between hardware and software, referring to code that is embedded directly into a device's non-volatile memory. It is characterized by its persistence, remaining intact even when the device is powered off, unlike volatile RAM. Because it is an uncountable mass noun, it does not have a plural form. To refer to individual versions or specific instances of the code, users must employ partitive constructions such as a piece of firmware or a firmware update.

Meanings

Noun

"The technician updated the router firmware to fix a security vulnerability."

Noun

The specific set of instructions that tells a piece of hardware how to communicate with other hardware components or the operating system.

"The printer firmware manages the movement of the ink cartridges and the paper feed mechanism."

Last Updated: June 14, 2026•Report an Error