Firmware is a sort of software program that’s embedded in {hardware} units. It’s accountable for controlling the low-level capabilities of the gadget, akin to the way it interacts with different units and the way it responds to person enter. Firmware is usually saved in ROM (read-only reminiscence), which signifies that it can’t be simply modified or up to date. Examples of firmware embrace the BIOS (fundamental enter/output system) on a pc motherboard, the firmware on a digital digicam, and the firmware on a mobile phone.
Firmware is necessary as a result of it permits {hardware} units to operate correctly. With out firmware, units wouldn’t be capable to carry out fundamental duties, akin to turning on, responding to person enter, or speaking with different units. Firmware additionally performs a task in safety, as it may be used to guard units from malware and different threats.
